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First time at the range today with what I call my '22 ACM' (Anti CreedMoor). Basically, it's a 22 Creedmoor done in reverse of current fashion. Barrel is a Hart LV twisted 1:14 that was originally on a BR gun in the late '70's chambered in 222, then rechambered to the 223-38 by BR great Ferris Pindell sometime in the early '80's. We left the 223-38 and Ferris' name on the barrel for some good vibes. The barrel has been rolling around my barrel rack for years and it was time to get it up and running again. My pal Randy Robinett (BIB Bullets) has a great 22 Creedmoor reamer with a shorter free bore so that got used. The stock has been rattling around on the stock shelf for quite some time, too. -Mack Bros EVO single shot -McMillan HBR stock -Hart 1:14 LV profile -Jewell trigger -Lapua 22-250 brass -Sightron 6-24X44 with 1/4" dot Other than f-forming the cases, this was the first time at the range. At 38.5 I knew it was clearly asking for more powder. Another .5 gr. and it shot a tidy little three shot group with a hint of the 3 o'clock 12-14 mph push for a bit of a weather report. It hung in there to 39.5 and shot a flat .200. I changed powders and didn't find anything to write home about. Next time out, the 39.0 will get repeated with several 5 shot groups. I don't expect any surprises. The .178 was shots #16-18...it didn't take long to find something it liked. Good shootin' -Al
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neat stuff. Thx for the write up
"If there are no dogs in Heaven, then when I die, I want to go where they went" Will Rogers
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Beautiful rifle. Makes me wish that gel-coat McMillans weren't bumping $900 these days.....
Now with even more aplomb
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Beauty. What bullet and speeds you getting?
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What bullet and speeds you getting? BIB 52 @ 3,860
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Campfire Outfitter
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Only accurate rifles are interesting.
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Very cool Al.
Is it going to be a varmint rig or a comp gun?
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Cool rifle Al, a Creedmoor with no man bun required. 🙂
Too close for irons, switching to scope...
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Is it going to be a varmint rig or a comp gun? It really doesn't fit into any IBS/NBRSA Benchrest class. Just a darn good 'dog gun. Good shootin' -Al
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Cool rifle Al, a Creedmoor with no man bun required. 🙂 No skinny jeans, either. But I'll admit to wearing Hey Dudes. Thanks!
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That one got settled in a hurry. Cool project.
WWP53D
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Beautiful rifle. Makes me wish that gel-coat McMillans weren't bumping $900 these days..... Speaking for myself, a gel coated McMillan is as good as it gets. If you can do some of the finish work yourself...pillars and bedding, pad, etc, the prices can still be within reason. A basic inlet with just pilot holes for the action screws is what I start with. Good shootin' -Al
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My ACM is a 22-250AI, set up very similar to yours, with 14tw. Walther barrel and a big brake, except on a 700 action. Also shoots about the same with 50BT's using just a bit more of the same powder and going a bit faster.. Brass is PMC. In the unlikely event that I need more brass, will make it with 22CM. Nice that it's available with a large primer pocket.
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I have a custom old-school Schultz and Larsen in 308 Win twisted at 1:14. Shoots 155 Palmas lights out. It's ideal for the 150-168gr bullet range.
I believe in no more bullet weight than necessary for the range used. Longer bullets than necessary only aggregate barrel wear.
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The true ACM is the 270 Winchester.
Regards,
Chuck
"There's a saying in prize fighting, everyone's got a plan until they get hit"
Ghost And The Darkness
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First time at the range today with what I call my '22 ACM' (Anti CreedMoor). Basically, it's a 22 Creedmoor done in reverse of current fashion. Barrel is a Hart LV twisted 1:14 that was originally on a BR gun in the late '70's chambered in 222, then rechambered to the 223-38 by BR great Ferris Pindell sometime in the early '80's. We left the 223-38 and Ferris' name on the barrel for some good vibes. The barrel has been rolling around my barrel rack for years and it was time to get it up and running again. My pal Randy Robinett (BIB Bullets) has a great 22 Creedmoor reamer with a shorter free bore so that got used. The stock has been rattling around on the stock shelf for quite some time, too. -Mack Bros EVO single shot -McMillan HBR stock -Hart 1:14 LV profile -Jewell trigger -Lapua 22-250 brass -Sightron 6-24X44 with 1/4" dot Other than f-forming the cases, this was the first time at the range. At 38.5 I knew it was clearly asking for more powder. Another .5 gr. and it shot a tidy little three shot group with a hint of the 3 o'clock 12-14 mph push for a bit of a weather report. It hung in there to 39.5 and shot a flat .200. I changed powders and didn't find anything to write home about. Next time out, the 39.0 will get repeated with several 5 shot groups. I don't expect any surprises. The .178 was shots #16-18...it didn't take long to find something it liked. Good shootin' -Al Looking at that rifle again. Love the stock, one of the prettiest I've seen. The whole thing is about perfect.....as a 22-250AI it would be perfect. LOL.
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Looking at that rifle again. Love the stock, one of the prettiest I've seen. The whole thing is about perfect.....as a 22-250AI it would be perfect. LOL. Think of it as a 22-250 AI with a 30 degree shoulder...makes it easier. Using Lapua 22-250 cases helps, too. And the great BR case is on a 30 degree shoulder. 2700, 760 and N540 are on the menu next. Thanks for the comments. Good shootin' -Al
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Campfire 'Bwana
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Campfire 'Bwana
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Looking at that rifle again. Love the stock, one of the prettiest I've seen. The whole thing is about perfect.....as a 22-250AI it would be perfect. LOL. Think of it as a 22-250 AI with a 30 degree shoulder...makes it easier. Using Lapua 22-250 cases helps, too. And the great BR case is on a 30 degree shoulder. 2700, 760 and N540 are on the menu next. Thanks for the comments. Good shootin' -Al What makes a 30 degree shoulder easier than a 40 degree 22-250 AI shoulder or the 28 degree 22-250 shoulder if you're going to fire form cases? Isn't the whole point of the 22 CM to have a standardized quicker twist to allow for the use of longer/heavier bullets than typical 1-14" ROT 22-250s?
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2700, 760 and N540 are on the menu next. A2700 and Win760 along with H414 are the same powder. But you knew this right?
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What makes a 30 degree shoulder easier than a 40 degree 22-250 AI shoulder or the 28 degree 22-250 shoulder if you're going to fire form cases? In general, a 30 degree shoulder feeds better from a magazine than a 40. That's important for a production gun. The "easier" was in reference to the great 22-250 AI...a bit of tongue in cheek. Isn't the whole point of the 22 CM to have a standardized quicker twist to allow for the use of longer/heavier bullets than typical 1-14" ROT 22-250s? The 22 Creedmoor is nothing new. It's been around for decades as the 22-250AI...the only difference being the shoulder angle. What the Creedmoor designers got right was the neck and throat dimensions when it became a SAMMI cartridge. But accuracy minded 22-250 AI builders were already doing that for this and many, many other cases for over a half a century before the 'miraculous' Creedmoors appeared as a production item. The twist rate has zero to do with the chamber dimensions. You change the freebore (throat) length to fit the bullets you are going to shoot for the best accuracy. Again...standard accuracy design 101. The custom reamer used on this build was a no-turn 22 Creedmoor with a .030 freebore length for bullet weights appropriate for the jacket lengths/weights being used. With a throating reamer, this reamer has cut chambers for the 7-8 twist for the longer bullets that have been killer good for accuracy. And with a separate neck and throat reamers, it's made up great 6 Creedmoors with multiple bullet lengths with the appropriate twists. Not everyone is into lobbing long heavy projectiles with rainbow trajectories and using a LRF to range targets. Many of us enjoy the challenge of eyeballing a 'dog for distance, doping the wind and connecting. The accuracy of conventional BR quality conventional bullets is an added plus. Hope this helps. -Al
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A2700 and Win760 along with H414 are the same powder. But you knew this right? 414 and 760 were different powders for decades until being standardized as 760. H414 then ceased to exist as a new powder. 2700 has always been different. I know that with the acquisition of Accurate by Hodgden, I keep hearing that 2700 and 760 are the same. All I can tell you is my new 8 lber's of 2700 look different than new 760. They've always been virtually interchangeable...but not exact. I'm looking forward to shooting them both back to back. Good shootin ' -Al
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Campfire 'Bwana
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What makes a 30 degree shoulder easier than a 40 degree 22-250 AI shoulder or the 28 degree 22-250 shoulder if you're going to fire form cases? In general, a 30 degree shoulder feeds better from a magazine than a 40. That's important for a production gun. The "easier" was in reference to the great 22-250 AI...a bit of tongue in cheek. Isn't the whole point of the 22 CM to have a standardized quicker twist to allow for the use of longer/heavier bullets than typical 1-14" ROT 22-250s? The 22 Creedmoor is nothing new. It's been around for decades as the 22-250AI...the only difference being the shoulder angle. What the Creedmoore designers got right was the neck and throat dimensions when it became a SAMMI cartridge. But accuracy minded 22-250 AI builders were already doing that for this and many, many other cases for over a half a century before the 'miraculous' Creedmoors appeared as a production item. The twist rate has zero to do with the chamber dimensions. You change the freebore (throat) length to fit the bullets you are going to shoot for the best accuracy. Again...standard accuracy design 101. The custom reamer used on this build was a no-turn 22 Creedmoor with a .030 freebore length for bullet weights appropriate for the jacket lengths/weights being used. With a throating reamer, this reamer has cut chambers for the 7-8 twist for the longer bullets that have been killer good for accuracy. And with a separate neck and throat reamers, it's made up great 6 Creedmoors with multiple bullet lengths with the appropriate twists. Not everyone is into lobbing long heavy projectiles with rainbow trajectories and using a LRF to range targets. Many of us enjoy the challenge of eyeballing a 'dog for distance, doping the wind and connecting. The accuracy of conventional BR quality conventional bullets is an added plus. Hope this helps. -Al Other than a little more case capacity, what is the practical performance advantage of a .22 CM or a .22-250 AI with a 30 degree shoulder over the standard .22-250 with its 28 degree shoulder, assuming that the throat is cut and ROT selected with a specific bullet in mind? Do you know what bullet was intended to be the optimal choice for the .22 Creedmoor SAAMI specs chamber and throat?
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Campfire 'Bwana
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The other cartridges also have less body taper than the regular 22-250.
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~Molɔ̀ːn Labé Skýla~
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It was a 223 with a 38 degree shoulder that was experimented with in the '70's for BR use. -Al
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It was a 223 with a 38 degree shoulder that was experimented with in the '70's for BR use. -Al Long time back, I had Fred Hasecuster chamber an old PPC barrel into a 6x47x45 for PD's. (6x222 Rem Mag Improved w/ a 45* shoulder) I got another 9K rounds out of that tube, hated to see it die......
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Long time back, I had Fred Hasecuster chamber an old PPC barrel into a 6x47x45 for PD's. (6x222 Rem Mag Improved w/ a 45* shoulder)
I got another 9K rounds out of that tube, hated to see it die...... I got so tired of shuffling this one around that I damn near cut it up to make seating dies.
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It was a 223 with a 38 degree shoulder that was experimented with in the '70's for BR use. -Al Thank you. I had googled it but nothing came up.
~Molɔ̀ːn Labé Skýla~
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I did my 22 ACM last year, but on the 47 case. 18" tube with a 12" twist, running 52 Bergers at 3800. Had to step down the H-4895 to make it snort. Just what the doctor ordered for dark opps.......
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I did my 22 ACM last year, but on the 47 case. 18" tube with a 12" twist, running 52 Bergers at 3800. Had to step down the H-4895 to make it snort. Just what the doctor ordered for dark opps....... What a great rig. You can imagine how hard it was for me not to use the 47L cases as a .224. If I would have had to use brass stamped 'CM' I couldn't have abided it. Having Lapua 22-250 brass saved me....
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Aalf is that a blast can and do you find it helps a lot? I dont use suppressors but have wanted to experiment with a blast can.
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Aalf is that a blast can and do you find it helps a lot? I dont use suppressors but have wanted to experiment with a blast can. Disregard. I read the post wrong.
Last edited by T_Inman; 08/10/23.
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Aalf is that a blast can and do you find it helps a lot? I dont use suppressors but have wanted to experiment with a blast can. What is a blast can? What do you have against suppressors? I’m certainly not trying to talk anyone into one because the fewer people that buy them should mean mine will come in sooner. Just curious what would make a fella against reducing recoil noise and muzzle blast.
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