22BR + 90 SMK @ 2950+ fps?

kombayotch

kombayotch

Super Moderator
Moderating Team
Rating - 100%
192   0   0
Location
Ohio
Want to get a .224 90gr. SMK going at at least 2950 fps out of a 26" barrel. Thinking the most efficient cartridge go this would be a 22BR. Anyone try this combo?

And before anyone suggests it, no I am not interested in 22-250...
 
Yep, was tried back in the day.. F Open and did quite well.

Give SteveB a pm... he ran this case for a couple of seasons.

If this is mag fed, I assume you have figured out a way to make it work?

And you don't have any interest in a 6 BR or Dasher?

Jerry
 
Mag mods for the 6br will work for it. People mod the AI/MDT plastic 223 mags or use a spacer in AICS.

I think it is the next step beyond the Dasher. You get near Dasher ballistics with less recoil and probably longer barrel life.
 
kombayotch said:
Mag mods for the 6br will work for it. People mod the AI/MDT plastic 223 mags or use a spacer in AICS.

I think it is the next step beyond the Dasher. You get near Dasher ballistics with less recoil and probably longer barrel life.
Click to expand...

What is the expected barrel life our of something like this?
 
kombayotch said:
I would think it would be good for over 2500 rounds before it starts losing velocity
Click to expand...

Wonder if you could run them even slower to get more life out of them.

I am one of those weirdos trying really hard to figure out how to get my AI to shoot 22 cal bullets.

I will be watching this closely.
 
I assume that you could but my goal is to out Dasher the Dasher. The Dasher is squeaking out the other sixes because the recoil management gives it an advantage on courses of fire where the majority of the shots are less than 800 yards and barricade heavy. It's inherent consistency is probably also an advantage.
 
Hey Gord! Life is good here! I'm taking full advantage of the perks of living here again... :evil:

1025171631_HDR.jpg


A lot of the PRS guys have built 22 Creedmoors (aka "the Bleedmore") for coyote hunting. It's impressive on those, but blows past the PRS velocity limits and barrel life isn't great. A bunch of guys are building 224 Valkyrie boltguns now, but that case is based on a 6.8 so it requires a lot more modification.

The BR or the Dasher at most should be enough for what I am trying to accomplish. The Norma Dasher may be ideal. PRS guys don't like it because it has less case capacity and looses 100 fps over the Lapua fireformed 6BR, but for this it might just have the ideal case volume.
 

Attachments

  • 1025171631_HDR.jpg
    1025171631_HDR.jpg
    39.8 KB · Views: 268
Last edited:
kombayotch said:
Mag mods for the 6br will work for it. People mod the AI/MDT plastic 223 mags or use a spacer in AICS.

I think it is the next step beyond the Dasher. You get near Dasher ballistics with less recoil and probably longer barrel life.
Click to expand...

I always thought 22cals weren't allowed in PRS matches...????

22BR run to the pressures to get that level of performance you want is going to be hard on bores... needing faster then 7 twist can lead to jacket failure as the bore wears. I did alot of shooting with 90gr Bergers and JLK's in a 223 and even then, things got sketchy as barrels wore.

Given what you are trying to achieve, I would do up a 22-204 Ruger... it is different from the 222 Rem mag. Shoot a 80 to 82gr bullet which can be hot rodded very easily... 8 twist and they are deadly accurate for a very long ways. And they tend to be more durable.

And you can likely stuff 12 to 14rds into a AICS mag. I bet time saved with more rds in a mag would be a good thing.

But I am surprised recoil is an issue when you are dealing with quite heavy rifles, big brakes or suppressors (sigh...).

Good luck with your project...

Jerry
 
They eliminated the 22 cal rule when flashers became more widespread. Now with Magnetospeed releasing a flasher for less ~$150, they will be even more common.

PRS rifles aren't that heavy. Most are running Medium Palma barrels 26" or less. Recoil comes into play when you're not very stable and trying to spot your own shots. You can shoot just about anything prone with a good brake and spot shots.
 
kombayotch said:
They eliminated the 22 cal rule when flashers became more widespread. Now with Magnetospeed releasing a flasher for less ~$150, they will be even more common.

PRS rifles aren't that heavy. Most are running Medium Palma barrels 26" or less. Recoil comes into play when you're not very stable and trying to spot your own shots. You can shoot just about anything prone with a good brake and spot shots.
Click to expand...

Now that is very cool... I was considering tactical class with a 223 as I didn't think a 308 would be tamed enough for me. But I have a couple of 6.5 creedmoors to play with first.... and I really like this chambering.

Understood about unstable positions...

Let us know how your project goes.

Jerry
 
22x47 lapua ?

Aren't you already shooting this in 6mm? The case capacity is a few grains less than a Creedmoor case so it should put you just where you want to be velocity wise, especially if you go with a slow powder and it should get you decent barrel life. You can probably use the same dies as your 6 just by switching the neck bushing like we do with the 22 Creedmoor. Unless you really set to do it in a smaller case that burns much less powder.

P.
 
Reddnobb said:
22x47 lapua ?

Aren't you already shooting this in 6mm? The case capacity is a few grains less than a Creedmoor case so it should put you just where you want to be velocity wise, especially if you go with a slow powder and it should get you decent barrel life. You can probably use the same dies as your 6 just by switching the neck bushing like we do with the 22 Creedmoor. Unless you really set to do it in a smaller case that burns much less powder.

P.
Click to expand...

I shoot 6x47L. I don't need that much capacity to get the 90 gr. bullet to where I would like it. Trying to reduce the size of the powder charge so that the barrel lasts longer. 22BR or 22 Norma Dasher should be ideal.
 
Nice to see you too! Good shooting.

The issue with the 224 Valkyrie is that it requires a 6.8 SPS bolt face, which falls between 223 and 7.62x39 base diameter. So, you need to open up a 223 bolt to run it in a tactical boltgun since there are no mag fed actions with bolts for that round. Its easier to just use an existing case that shares the same bolt face with a 308. Plus you get to use Lapua brass.
 
Mystic Precision said:
22-204Ruger would be an improved 222 RM. Case volume is very similar to a 22BR if you extend the throat.

I competed with a 223 and 90's .. OAL 2 5/8"... the 22-204 would be a few grains larger with a long throat

Jerry
Click to expand...

I have all these components laying around, I'll have to cobble something up. - dan
 
You must log in or register to reply here.
Back
Top Bottom