Getting quality headstamped brass with no fire forming is what sets the 22 creedmoor apart from the 250ai. With all that being said I dont think the 22 CM will have any problems making clean kills on deer size game out to 400-450 yards with solid shot placement. Im running the heavier bullets, typically 88 or 95 grains. BAck in the 70s we used to shoot 85gr Sierra hollow point boat tail bullets in our 6mm Rems. I did group it against one with far less rounds and it did not group as well. With good bullets, medium sized game can be taken quite easily with some 22 calibers. Anyone have load data for 22 creedmoor 50 gr. Just because you can, doesn't mean you should! The bullet diameter is .224, the same as any other .22 centerfire cartridge like the 223 Rem., 22-250 Rem., 224 Weatherby Magnum, 223 WSSM and 220 Swift. We have checked the reamer records accordingly. You need to know that it is a laser beam and varmint vaporizer! Due to supply and demand, some barrels may take longer than others to receive. In the recent few years, it feels like a new rifle cartridge is coming out almost monthly. I've done extensive testing with several of the latest batches of headstamped 22 Creedmoor brass. Bullets being an entirely application-driven choice makes it difficult to suggest one, but if you're looking for top choices for the 22 Creedmoor they would easily be the heavier of the class such as 75gr hornady, 80gr SMK, or 80gr Berger. No doubt running a heavier bullet with both the aforementioned cartridges could have eased my troubles, but I was quite interested in the Creedmoor and wanted to try it out. Back in the day, my first ever rifle was a Remington 700 in 6mm. 6mm Creedmoor Barrel Life. 6CM starts out at a neck diameter of approximately .271" and a loaded 22 creedmoor with hornady brass will end up at about .254-.255". Getting to 22CM from 6CM is a straight forward pass through a FL die. I think so, the 22 Creedmoor is a great shooting cartridge and the Meredith rifle shoots amazing. Preferably with h1000? 22 Creedmoor. Out of stock. Note: the following data does not necessarily demonstrate the most accurate load (or node), but rather demonstrates how barrel wear can be reduced by altering the propellant load. I think the barrel will give me a good barrel life based on round count but not based on time because I really enjoy shooting it and letting others try it. The 22 CM drops below that 800 ft-lb threshold at between 600 to 775 yards depending on the bullet and velocity of Copper Creeks different offerings. The 22-250 AI would make more sense to me. Thank you!! On unknown distance targets, that flatter trajectory would result in more hits. Rotate between two or three rifles, thus spreading out the number of rounds fired through each barrel. The advent of the 6mm Creedmoor immediately had folks necking the hornady 6mm down to 22 cal and upon doing so found virtually the perfect case capacity for heavy weight .224 bullets. Evidently they have a thin jacket. My buddy has one. This was a super accurate load but rather slow for this cartridge. I have some R26 and R23 that I want to try. All with R26. Life Jackets . Patrick's .22 Creedmoor was built by Little Crow Gunworks on a Remington 700 action using a PROOF Research barrel and Stocky's AccuBlock EuroMatch adjustable cheekpiece laminated stock. Skip to content. The throat is the part of the barrel where the bullet exits the cartridge and begins the rifling process, or in simpler terms, where the rifling begins. 370. The answer also relies heavily on your goals; a benchrest shooter will consider a barrel shot-out long before a hunter will. One of the easiest ways is to select a cartridge load that does not necessarily produce the fastest muzzle velocity, but rather considers barrel life versus effective range and stopping power; settling on a favourable compromise. I think you'll be very happy going that route. Now we have Alpha Munitions producing factory 22 Creedmoor brass, and the stage is set for a complete takeover of the big 22cal scene. One of the reasons that the 6.5 Creedmoor has become so popular is exactly because of its light recoil . Ethical hunters dont do that because we all know that the opportunity for perfect shot placement is the exception not the rule; particularly in brushy cover. I can tell you for an absolute fact that the 90 gr berger vld at 3400 fps is a death ray for white tails. They wouldnt allow me to stay on shore duty if I re-enlisted I didnt really want to end up o the U.S.S. bullets and fast twist rifling, usually 1:8 or even 1:7.5. We frequently get questions about the application of this cartridge and what it's primarily used for. I dont really care for comparisons based on different caliber rounds. There arent really any large scale manufacturers making a 22 Creedmoor Factory Rifle, however, there are somewhat off the shelf 22 Creedmoor rifles available from companies like McWorther custom rifles and GA Precision to name but a few. The reason for this is to generate the highest muzzle velocities, and lowest Standard Deviation of velocity. I tried 50gr vmaxs out of a 1-7 twist barrel and not one bullet ever made it to the 100yd target, one of them poofed just past the barrel, definitely take your can off when testing with these hot rods and light pills. A benchrest shooter will consider a barrel shot-out long before a hunter will. The above load results show us the following: Some other methods of increasing a barrels life and reducing throat erosion are as follows: Barrel life is monitored by keeping a record of all shots fired through each barrel. Those of you using bushings will typically want to take two steps to neck down. In our research though, it seems to have been made first either by George Gardner of GA Precision or by Tim McWhorter of McWhorter Custom Rifles. Self Defence & Tactical Rifle Operators , Snipers & Long Range Rifle Enthusiasts , 2023 Dark Earth Tactical. I am having the action trued up and will be bedding it into either a Savage laminate stock or an H-S Precision composite stock. #3123699 - 01/17/18 12:34 PM Re: 22 Creedmoor [Re: thoms715] CZ527 Die Hard Member III Registered: 12/25/14 Posts . You guys all using 6 Creedmoor dies with different bushings? The seller is "hausofarms-tc4me" and is located in Elizabeth, Colorado. To put it into context, a credit card is around 0.032" thick, so the amount of erosion we're talking about over the life of a barrel is barely more . $269 after rebate is a no-brainer price for a donor action. Jeff Cramblit is a world-class competitive shooter having won medals at both the 2012 IPSC World Shotgun Championship in Hungary and more recently the 2017 IPSC World Rifle Championship in Russia. Maybe not the article to raise this point. The choice will depend on the individual user and the quality of Alpha brass. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Well, contrary to some of the chat here, when I read a review like this, even though comparing various cartridges is common, I think of the new stuff as in addition to my current collection versus instead of. Kinda like my wife does with shoes. Taking a quick look at how the 22 CM compares to some other cartridges will shine a light on its potential. I picked up a whidden full length sizer, but have always used a modified 6.5 redding seater, Yes i did send in some chamber fired brass to whidden, seems pretty standard though, as for rigging up a seater , used a redding 22-250 stem in a 6.5 cm competition seater die, hope that helps. I was able to get a very consistent load with an 80gr Berger VLD Target in the 3450fps range that produced 45 firings on the brass. Using Hornady 6 creedmoor necked down at the moment. APR Maverick 22 Creedmoor - Alamo Precision Rifles APR Maverick 22 Creedmoor Sold! It shot the 80.5 Berger's with great accuracy also. Erosion from bullet friction alone is minimal as suggested by the longer barrel life of "mild" cartridges like 30-30 Winchester, 22 Hornet, and especially 22 rimfire. Proof was posted where McWorther custom rifles having already built and chambered on in 2012, so your reamer records were checked incorrectly. The cartridge and rifle perform well with my handloads or the factory available ammunition. Make no mistake, as precision rifles are becoming so common that shooters and custom rifle builders have had to turn to customizing calibers and cartridges for more performance, so too has the consumer marketing side of ammunition manufacturers also started creating more calibers and cartridges to further fuel the yearly upgrade and new purchase trend of rifles similar to other tech and cellphone industries. Thank You! Depending on size of the game hunted, but generally you will often hear most industry authorities recommending 6mm, 243 Win, 270 Win for any smaller CXP2 type antelope, and 30-06 Spingfield or larger for CXP3 medium to large game. A new, stainless steel barrel finished and installed should run you from about $500 to $1,000 depending on length, contour, brand, and who's doing the installation. With long range precision shooting becoming increasingly popular amongst rifle owners throughout the world, barrel life expectancy is often a question of concern, particularly amongst new buyers. 3450-3475fps would seem to be a really excellent place to operate with an 80gr weight class bullet. It was released in 2007 by Hornady and Creedmoor Sports. 22 Creedmoor Bartlein Barrel Build a 22 Creedmoor Bartlein to fit your needs! The Creedmoor has a maximum SAAMI pressure of 62,000 psi and the PRC has a max pressure of 65,000 psi. You could even use 6.5mm brass, it would simply take more work to neck down. I then send those pieces of fired brass off to Whidden Gunworks to have a custom full length sizer and micrometer seater die set made. Like most things Creedmoor the performance of the CM is exaggerated by pitting the highest BC bullets against standard 308 bullets and even getting that data completely wrong. 0.077" is a relatively small distance. JavaScript is disabled. For the best experience on our site, be sure to turn on J Loaded ammunition is available with bullets in the 70-75 range leaving 24 barrels at velocities around 3400+ fps, a bit more conservative than personal hand-loading, but still making it a very flat shooting, low recoiling round delivering impressive results. Comment * document.getElementById("comment").setAttribute( "id", "acb08e427cc3f73ca30b62e0ee31d3f0" );document.getElementById("d5ccf01b57").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment. A word of caution though, at the speeds delivered by the 75, 80 or 90gr bullets in this cartridge, combined with the expansion ability of ballistic tipped bullets, you should rather aim for head shots to prevent meat damage when hunting deer or other animals for meat, and not at all when hunting for trophies, we have seen this same 75gr bullet that cleanly took down the Zebra above, also remove the top half of a Impalas head on another occasion. It's definitely a fun little barrel burner, but I think the brass is the biggest downfall for me. Gotta love the experts who denounce new cartridges as useless just because they own something similar. Showing all 21 results. The fact that several vendors are manufacturing 22 CM brass certainly makes handloading simpler. These general guidelines apply more to the older traditional calibers when speeds were much lower, and with modern cartridge advances, the velocities achieved by modern smaller calibers make up for the energy lost in mass of the bullet, and the modern twist rates allows low drag bullets to carry those velocities and energy further down range. Especially factory 250 ammo. You will certainly NEED many more, if just to point out to others the importance of diff bore sizes, stock styles, etc..even if you NEVER shoot them! In front of me was a dry wash I could see deer enter it on one end and pop out about 100 yards in front of me. The fact that gun owners are becoming more advanced than before is another reason we may be seeing so many new cartridges. Plus I hand load HOT for that round as well. The 6 creedmoor forester ultra micrometer seating die should work for seating bullets in 22-250 Lapua brass to fire form into 22 creedmoor? This one has my attention. Once I lock in on the bushing size required to size effectively, I will load up 3 rounds at a hot load and fire them in my chamber. If you enjoyed this article please leave a comment below, and keep an eye out for future posts. The net result is the 6mm BRX []. Some specifically concentrate on varmint hunting, or coyote hunting, while others concentrate on high volume deer hunting or major game like elk and moose. I built the 22 CM to be a dual-purpose gun, or actually a 3-purpose gun. +2" rifle length. Try the 22-250 Lapua brass. I tried to find an email for Mr. Cramblit with no luck. IN something like this with such a short barrel life.I am of the opinion that once I find a load that works, I stick with it. Many who knew of my easy duty wondered how I did it. The most widely used barrel life calculator on the web today is known as Mikes Spreadsheet, which uses five variables to provide a good accurate barrel life estimation. A 22 Creedmoor for deer will work as well as any 6mm or 6.5mm caliber, and sometimes even beter out at longer distances. At this point we can say that it has reached the end of its barrel life, and seek a replacement. Note, I shoot without stopping so much so that bullets will discolor sitting in the chamber. While barrel life many not be financially concerning for many shooters around the world, it is still good to understand roughly how long your barrel may last until precision starts to decline. Yes deer are half the size of a man and do not have body armor but even the mostly ignorant DOD civilians are letting the military look at larger calibers than .22 because of lack of long range effectiveness. Just as they were done, Loki, disguised as a fly, bit Sindri on the elbow causing all 6.5 barrels forged to wear out at 4000 rounds but be extremely accurate The 22 Creedmoor was built with long, heavy .224 bullets in mind. Within the shooting industry, there are all kinds of niche markets today. This went on off and on.for three yearswe were the Naval Aviation version of M.A.S.H. A rifle barrel can continue wearing while still proving the shooter with many months or years of successful shooting, until reaching a point where the barrel no longer provides the accuracy that you require from the rifle. The Creedmoor in 22 Creedmoor denotes the fact that it comes from a 6.5mm Creedmoor which has been necked down to accept a .224 bullet, the Creedmoor in 6.5mm Creedmoor in turn comes from Creedmoor Sports, for whom the 6.5mm Creedmoor cartridge was developed by Hornady and Creedmoor Sports jointly. These cartridges include (from left) the .22-250 Remington, .22 Creedmoor and .22-250 Ackley Improved. Thought I'd post this here since there was discussion of barrel life. Just letting you know it was first created by Horizon Firearms out of Texas February of 2014. Varget and the faster propellents finding favor with the light weight bullets in the 50gr range while H4350 and H1000 being used with the 75- 80gr class bullets. Name Phone Number Email Message Survival Gear . He has followed that passion for over 30 years, hunting and competing in practical pistol, 3gun, precision rifle and sporting clays matches. The one company is doing a buy one, get 50% off that barrel for the next barrel, so I figured I would build the first one expensive. Im getting very good velocity with RL26. The 22 Creedmoor or 22CM as some call it, was bound to happen at some point as almost every new caliber or cartridge created, gets necked down to a wildcat with a lighter bullet for more speed at some point in time, however the exact person to first do it is still to be confirmed. I'll elaborate more on 25 Creedmoor in future stories! The ability of the heavy .224 bullets to retain both velocity and energy at long distances makes this . Laugh! This is known as a barrel log. Compare it to Factory ammo available to everyone for the last 50-75 years to see if its even worth the bother to wildcat it. This helps us keep this site going, and does not affect the price you would pay usually in any way whatsoever. . The oldest mention and claim of a rifle chambered in 22 Creedmoor, is a comment made on 24 October 2013 on a SnipersHide post where user KYS claims to have suggested a 223 bullet faster with more reliable feeding and George Gardner of GA Precision and Josh Lapin of Copper Creek Ammo joked about the 22 Creedmoor, and this comment was in response to the post highlighting the image on GA Precisions Facebook page showing a 22 Creedmoor earlier the same day. I thought that might be the case just wanted to confirm. Its a great quality barrel, but the only profile available at the time was far heavier than I would have liked, so in order to keep the overall weight of the gun down I had the gunsmith make it shorter, giving up some velocity to gain mobility afield. Is Cheap Thermal Worth It? At 4400, it was toast. This so far is the oldest actual documented mention of it, but with the image of the cartridge loaded and shot on range from McWorter Custom Rifles showing them as the oldest actual documented builder of a rifle able to shoot it. A barrel log should be kept for each rifle in your Shooting Record Book, or Field Data Book, and may also be stored on an electronic copy or cloud drive for safekeeping. I've got a barrel sitting at Beanlands now scheduled for fitting in April and I'm trying to get everything together. Use at your own risk! The first was for the coyotes and varmints previously mentioned. We have shooters today who are highly specialized in their shooting niche. I loaded up 200 rounds with fireformed 22-250 Lapua brass and 45.5 grains of R26. This rifle is an absolute nightmare on Coyotes, Feral Hogs, Prairie Dogs, and Whitetail Deer. Do a 22 BR or 22 BRA. I had a rifle built by Meredith Rifles, using a Defiance action, Bartlein barrel, Manners stock andNightforcescope. Texas Ammo Inc BallisTX 22 Creedmoor 80gr ELD-M 20rd Bx/ 25 Cs . 25 caliber: 0.257 ". Similarly, there are no big-name ammunition companies loading for the 22 CM, but there are several smaller companies offering ammunition so you dont have to reload at all. Farthest was about 140yds, bullet still passed completely through, exiting through the far shoulder on a quartering away shot. Savage pre fits come in 2 shank sizes; Standard (small) Shank / 1.058"-20, Large / 1.120"-20. Getting to 22CM from 6CM is a straight forward pass through a FL die. You could achieve better barrel life going with a slower powder especially with the 80 and heavier bullet weights. Related Tags: Ive seen claims of 80 grain Bergers @ 3500 fps out of 26 barrels, which would be devastating on any varmint. Happy hunting. I know several folks including myself have been playing with the 22 creedmoor for a while now. As a matter of fact, I dont remember but one large buck that ran about 100 yds. But also dont over-clean your rifle; only clean when necessary. There is also 22 Creedmoor SRP brass available offering small rifle primer holes for shooters preferring small rifle primers. Want One? Very long barrel life; Cons of the 6.5 Creedmoor. 0.077 1300 100). The only thing I wish I had done is to get a brake put on it. Leaning toward the more conservative number of 1300 ft-lbs, the same 22 CM bullets combinations are good out to 300- 400 yards. I bought some Peterson 6 Creed brass ( seems to be very good brass) and have been trying to use RL26 with CCI 400 AND 450 primers and it's been very unfulfilling with wild velocity swings. I'm starting to collect parts for a 22 Creedmoor build. Starting with a .260" bushing on the first pass and finishing with a .250" will often work quite well. Being based off the 6.5 CM cartridge case, the 22 CM runs in short action rifles and feeds smoothly from SA magazines produced by many manufacturers. Great idea. I have killed a couple with that round as well..but it took a lot longer to do so. Creating a 22 Creedmoor chambered rifle is also fairly simple, you simply use the action of a rifle, or a rifle with a compatible bolt face and action length as can be seen on our bolt face database, and then have a gunsmith chamber and fit a .224 barrel to it. Leaning toward the more conservative number of 1300 ft-lbs, the same 22 CM bullets combinations are good out to 300- 400 yards. I ran the numbers on the 45-70 I carried to Africa last year. I have all the necessary dies and a good sample of bullets to try it out with. But that's not the main selling point. The process for making that brass was easy enough, but still, somewhat time-consuming. From what info I was able to find on the net, it was designed a few years ago by the GAP ( Georgia Precision) folks specifically to shoot long heavy .22 cal bullets at decent hunting velocity while providing a good barrel life and flawless feeding from detachable mags. Big bore vs small bore, back and forth FOREVER. Cooper Creek, Gunwerks, and Spark Munitions have a variety of offerings depending on what purpose you have for the gun. . I ordered a 6.5" twist barrel. This requires that you have the correct reloading shell holder or case holder as it is sometimes called for each of the calibers that you reload ammunition for, to ensure that you can hold the cases in the reloading press to use them. There are a number of things that a shooter can do to reduce barrel wear. This would make him the first documented person to suggest a 22 Creedmoor cartridge on record. My 22 Creedmoor is doing 3511 fps with 80 gr Nosler CC bullets. The 90gr smk has almost the same B.C. Required fields are marked *. Proudly powered by. JavaScript is disabled. Why would I switch. SMFH. When starting with 6mm Creedmoor brass, you will need to neck it down to produce 22 Creedmoor. The point of this wildcat is to use heavy for caliber bullets, which most if not all of the old 22s cannot do. That just isn't a thing in Creedmoor land. It has wide forgiving sweetspots, which makes it inherently accurate even for the most novice reloaders, and the velocity combined with the ballistic coefficients of the .224 bullets in 75, 80, 88 and 90gr are so good, that wind does not bother it as much as even larger calibers. Some might not want to fireform especially in todays situation, BUT for me I found lapua brass in 22-250, and that was the deal breaker for me. Just thought I'd update here. Casing Type:.22 Creedmoor LRP (Large Rifle Primer) Casing Trim Length: 1.910" Primer: Federal Large Rifle Magnum Match (GM215M) Rifle Firearm Used: Horizon Firearms .22 Creedmoor Barrel Length: 24" Rate-of-Twist: 1 in 8" Casing Manufacturer: Peterson Cartridge Co. Casing Type:.22 Creedmoor LRP (Large Rifle Primer) Casing Trim Length: 1.910" A barrels life expectancy can vary vastly from one caliber to the next. Your observation sounds spot on. Estimated at roughly 1% the cost of a modern rifle setup The Ultimate Guide To Rifle Marksmanship will be one of the best purchases you could ever make as a rifle owner! What is does excel at though, and arguably better than any other cartridge ever made, is for taking down coyotes and other varmint. With a wide selection of bullets and factory brass available, all thats needed is reloading dies to put it all together, and with reloading dies now available from major sources such as RCBS, Hornady, Redding, and Whidden, the 22 CMs seems on the rise. Sad. Making the 6mm BRX is easy and involves loading up 6mm BR brass and fire forming it in a 6mm BRX chamber (the fire forming loads can also be very accurate). I will try again later using faster burning powders but for now back to the proven. You must log in or register to reply here. It Testing the AGM TS19-256, .22 Magnum for Personal Defense Is the Juice Worth the, Ruger Introduces Custom Shop Precision Rifle in 6.5, SafarilandReleases First of its Kind Hard Armor Rifle. Then too there was always the discussion of barrel life, and cases with lots of body taper and shallow shoulder angles tend to tear up throats. We were all enlistedour CO/Officer in charge was an Ensign straight out of the Naval Academyand he was in agreement with all of his men (us)that this was cake duty and that God is the benevolent supreme being by stationing us there temporarily on TAD. I believe it will gain a true following like it's big brothers. If you are gun-savy and have a barrel vise, a Savage barrel nut wrench and the corresponding chambers' Go gauge, you have everything you need to correctly change your Savage barrel. Semper Fi. Features: Bolt Action, 6.5 Creedmoor, 22" Fluted Stainless Barrel, SA Radial Brake, Green Co. Springfield Armory 2020 Waypoint - For Sale - New :: Guns.com 3/3/2023 With all the more appropriate cartridges out there, why anyone would use a barely capable 22 caliber class round on medium sized game is beyond me. Both these rounds are considered fantastic for long-range shooting. Increased barrel life compared to 6mm Creedmoor. The gun has NO recoil, and is downright easy to hit targets with due to the flat trajectory and outstanding wind-defeating bullets. It is my feeling that Alpha Munitions OCD 22 Creedmoor is the best presently available. The typical American had just a few all-purpose guns a few decades ago. Sep 30, 2004. The action is a standard Savage 12FV in 6.5 Creedmoor purchased at Cabela's during their sale. The last deer I shot I tucked right inside the shoulder blade as he was quartering towards me and it completely destroyed the opposite lung. Considerably less powder, longer barrel life, slightly less recoil, and I bet it will be easier to tune. Poor cleaning practices can reduce the life of a barrel by damaging rifling. Phone: 605-554-1911 | Email : sales@primalrights.com. This also creates a different beast altogether, including higher maximum pressures (based on SAMMI 6mm CM numbers). Please email or call us if you would like an estimated time of arrival.After turning down the barrel, we jacket a 416R Stainless steel match barrel in a roll-wrapped carbon fiber sleeve and load it under tension. This item can be shipped to United States. After hundreds of comments, phone calls, and mess. For PRS you dont actually need all the speed the 22 CM has to offer from longer barrels. Several years later and the 22 Creedmoor has completely established itself among my 22 cal firearms. Research shows that recommendations range from 800 ft-lbs to 1300 ft-lbs. Want to become an expert on reloading, or just gain the knowledge needed to get started, here is a list of the best reloading books available. Full house loads in 7-pound rifles recoil with about 15.7 ft.-lbs. My main 26" barrel is pushing 80gr Berger's at 3525fps and is relentless inside 800yds. The 22 Creedmoor can comfortably take down most CXP3 size animals with well placed shots in the head or heart, if the bullets are expanding type bullets in 75 grain or larger size, however, for general recommendations, we would keep to CXP2 animals up to the 300 pound class, and you will be withing safe limits. Home What is my Rifles [Accurate] Barrel Life Expectancy? Possibly GA Precision could prove to be the oldest if they can provide documented evidence of their 22 Creedmoor reamer, or rifle being made before then as SnipersHide user KYS claims, but we are merely going on evidence found through search so far. Peterson Cartridge has released their own drawings for the cartridge. Thanks for the informative story! . I learned a few things from it, in the Marine Corps we kept barrel logs for our M40A1s. I mailed out my barreled action to long rifles inc to be converted. Reduced recoil compared to 6.5 Creedmoor. I totally agree! Im running a 21 Shilen 1-8 twist and I have excellent accuracy with 80gr smk, 80 eld-m and 88gr eld-m bullets. You can also use Lemi Shine ultrasonic brass cleaners. The Hornady 250 grn FTX worked well on a large Black Wildebeest at 296 yards, the first shot took it down, the second ensured it never got back to its feet. Lets use the following .300 Winchester Magnum loads to demonstrate. Among his training credits include NRA Instructor, AR-15 armorer, FBI Rifle Instructor, and Officer Low Light Survival Instructor. Choke Tubes, Stocks and Parts . Thanks for your comment and for sharing your experience with us Mike. I have rifles chambered in both 6.5 and 6mm Creedmoor (CM) but the 22 CM has captured my attention. Note, I shoot it like I stole it. I had a stand at the top of a rocky hill, surrounded by field. I intend to use 83 gr Hammer or 75 gr Swift bullets. It also depends on the ammo, bullet weight / style, powder, and velocities that you're running. These five variables are as follows: Throat erosion is often the main determining factor of a rifle barrels life. The available ammunition is priced in line with high-quality hunting and match ammunition, which is taking the 22 CM a step beyond the realm of a wildcat requiring hand-loading, and getting closer to that of being a factory product. Clean kill yes indeed, but not a pretty sight. A barrels life expectancy is caliber dependant, and may range anywhere from 1000 rounds to 6000 rounds or more. as the 88gr eldm so Id assume they would stabilize in a 1-8 twist but I havent tried them or the 95gr. Save my name, email, and website in this browser for the next time I comment. We use this jacketing method rather than wrapping the barrel in carbon fiber because this method of .