22 creedmoor

#601
Was noticing today ADG 22 creedmoor brass has very loose headspace, like 7-9 thousands more than any 6.5 brass I’ve loaded. Definitely needs fire formed and wondering if it weakened the brass
 
#602
Guys I am thinking about trying some Hammer Bullets in my 22 creed AR 10 with a 22"proof carbon barrel with 7.5 twist. I was talking to the bullet company and they were telling me I could shoot essentially projectiles in the 30gr range up to 73gr range. Does this sound correct?
 
#603
Id say no on 73. Says 7 twist and they are spot on with required twist in my experience. Excellent bullets though. Slightly less pressure with than regular bullets so stay on the faster burn rate side
 
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#605
The bullet manufacturer is generally the authority on what twist their bullets require to perform properly. If you don’t trust their recommendations then buy some heavier than 73 grains shoot them and report back.
 
#606
Zback said:
anybody else have any thoughts
Click to expand...
Looking at other posts of setup's....
You should have NO issue running those.. 90grain + should not be an issue.
I am deducting this by what others have ran in there 22 CM.
I am not sure about if the heavy bullets will feed well though, as 100grainers in 6mm Creedmoor ar10 gassers have had some of the bullets not feeding well... NOT ALL, but some of those heavies, and this may relate to the 22 CM as well if up in the 100 grainers, but I will not be running them, as 1- there NOT available, not what I want for varmints, and they are expensive. 77 -88grains will be great for my needs.

Example:
Perterson's Brass says for the MAX load of 22 creedmoor with 80gr bullet withH4350 is 36.3 and has a 62.223 psi pressure.
Yet EVERYONE is loading this WAY over this MAX... w/o issue... in fact on PETERSON's website they say the "DO NOT USE THE BELOW LOADS IN YOUR RIFLE" EXP 80 Grain BERGER VLD TARGET H4350 with 40.5 Grains with a Velocity of 3,500 FPS with a pressure of 77,343 PSI..

On one hand a manufacture.... says you MUST HAVE a 1/7 or greater twist to run over a 75 bullet.... yet guys do-in-it all day long with 88's grainers
And the manufacture of brass says "NO WAY can you have a load of 40 grains of H4350 in the 22CM yet everyone on this website is doing in in spades, w/o issue. (Have yet to see a video of someone loosing there face or eye on "screw u Tube.com" yet)
I will not be loading them that hot in my Gasser.

In terms of this 22 creedmoor, the manufactures recommendations have been that, recommendations.

I will also add, that I have been running 88 grain ELD's out of a 22 inch 1/7 twist AR10 22 creedmoor gas passer. Have yet to check accuracy extremes, but so far it seems good. (not had time to mess with loads)
Hope that helps.... you can always page through the 12 pages and decide.
 
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#607
Hammers are different. I tried running the 75’s in my 7 twist hoping the additional speed would compensate. Not even close. The 83’s are excellent
 
#610
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#614
Complaint is they don’t have a very good search engine on that website
I guess says that’s also why you don’t find them coming up when you do a search for say 22 Creedmoor brass
 
#616
I'd go with the Peterson, but plenty of guys have good luck with Lapua 6 CM necked down. One less step in the process. Can also fireform Lapua 22-250 brass, but it'll come out just a little short in the neck.

Alpha makes 22 Creed brass, but I haven't seen any for a while. Hornady as well.
 
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#621
orkan said:
It can’t do what the creed can do. Not a “bad” cartridge. Just not as good in my eyes.
Click to expand...

Any insider info on when we can get access to OCD Alpha for creed? Inching closer to getting mine put together (just waiting on a barrel) and hoping to run that brass.

Almost broke down the other day to pick up 22GT OCD brass but held strong.
 
#624
I've only shot 77tmk out my gun as they shoot very well: proven loads from a 22" 8tw on a Tikka using lapua 6cr necked down and turned for 4k chamber clearance:
42.6gr N555 @ 3385 fps
43.6gr RL23 @ 3410 fps
45.5gr rl26 @ 3470 fps
All cci450 primers seated -20k
All loads shoot tiny clusters at 100y and under half moa at 500y. This is a deer/antelope/coyote gun.
 
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#625
shootist406 said:
I've only shot 77tmk out my gun as they shoot very well: proven loads from a 22" 8tw on a Tikka using lapua 6cr necked down and turned for 4k chamber clearance:
42.6gr N555 @ 3385 fps
43.6gr RL23 @ 3410 fps
45.5gr rl26 @ 3470 fps
All cci450 primers seated -20k
All loads shoot tiny clusters at 100y and under half moa at 500y. This is a deer/antelope/coyote gun.
Click to expand...
Nice, I might try the 77tmk/r23 combo this winter
 
#632
Round 26 and rifle is blooded
555A1306-0B5A-4CCF-8822-D1576531BA75.jpeg
 
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#634
Huckleberry75 said:
@Dogsniper obviously the 65gn sgk's worked, based upon the photo. How did they do on entrance & exit holes? I understand that 1 coyote is a far cry from field vetting, but curious what your thoughts are on that bullet performance. I have 500 of them and a new 20" 8tw 22cm coming for my son. Primary uses will be deer, yotes and hogs.
Click to expand...
They work great . Couldn’t really see the entrance, exit was the size of a nickel-quarter. I think they are perfect for your intended use . I’ve shot coyotes and cats with them in 223.
My favorite thing is not having to worry about bullet splash when they hit bone. Unlike varmint bullets. Obviously that isn’t as fast as the creed. This dog was about 100 yards , bang flop.
 
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#637
22 creedmoor is an excellent hunting/predator cartridge! It's a laser beam. I dont know if I'd run one in comps due to barrel life but if a guy were to do so, probably spin a few barrels at once. I've got 440 rounds on mine and surprisingly throat wear doesn't look that bad but I've been running rl23/rl26 and N555 for most my shooting. Not the typical 4350 burn rates. I don't get it hot, 3-5 shots and cool. The typical 257 neck reamers don't do well with lapua 6cm necked down, as cases will need turned, but 258-259nk works well.
 
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#638
shootist406 said:
22 creedmoor is an excellent hunting/predator cartridge! It's a laser beam. I dont know if I'd run one in comps due to barrel life but if a guy were to do so, probably spin a few barrels at once. I've got 440 rounds on mine and surprisingly throat wear doesn't look that bad but I've been running rl23/rl26 and N555 for most my shooting. Not the typical 4350 burn rates. I don't get it hot, 3-5 shots and cool. The typical 257 neck reamers don't do well with lapua 6cm necked down, as cases will need turned, but 258-259nk works well.
Click to expand...
works well with Hornady 6 cm, I had issues with hangfires using lapua 6cm small rifle primers also
 
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#641
shootist406 said:
22 creedmoor is an excellent hunting/predator cartridge! It's a laser beam. I dont know if I'd run one in comps due to barrel life but if a guy were to do so, probably spin a few barrels at once. I've got 440 rounds on mine and surprisingly throat wear doesn't look that bad but I've been running rl23/rl26 and N555 for most my shooting. Not the typical 4350 burn rates. I don't get it hot, 3-5 shots and cool. The typical 257 neck reamers don't do well with lapua 6cm necked down, as cases will need turned, but 258-259nk works well.
Click to expand...
My reamer is a .2575 neck and I run necked down Lapua 6.5 srp brass without any issues. but of course each rifle is different. I run Hornady brass when calling and I can loose pieces, and run Lapua when running on steel or deer hunting.
 
#642
Huckleberry75 said:
My reamer is a .2575 neck and I run necked down Lapua 6.5 srp brass without any issues. but of course each rifle is different. I run Hornady brass when calling and I can loose pieces, and run Lapua when running on steel or deer hunting.
Click to expand...
I've found lapua 6.5 creedmoor brass to be thinner than 6mm by a 001-0015 per side, so that does make sense.
 
#644
orkan said:
by the time you get it to 22cal… I’m sure you’d pick the thickness back up.
Click to expand...
Thats kinda what I though but I was able to slip a bullet with light resistance back into a 6.5mm case that wasn't turned, the 6mm I had to force a bullet in. Turned everything to 253 loaded neck diameter so 0145 per side. Good to go now in my 257 nk chamber tighter necks just cause pressure issues that aren't necessary. I'd rather have 6k clearance Than 3k.
 
#646
have any of you tried the PBB with their 22CM 95smk cut?

I'm still new to reloading and trying to figure out if I can get away with the normal ream so I can get a little more life out of my throat.

I only plan on hopefully running the 95 SMK so I hope it preforms well.
 
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