.22 Conversion kit - barrel length & muzzle attachments?
When using a typical CMMG conversion kit used in a 5.56, are there limits on how short the barrel can be before the unit won't work reliably?
Do muzzle brakes ever take a hit because of a tumbling .22lr
So if I had a 7.5" 5.56 1/7 with a muzzle brake would there be any issues tossing a CMMG kit in it?
interesting question, TAG
just make sure that you clean any muzzle device that you put on the end of a 22LR barrel often.
I've had accuracy go to crap after 1000 rounds due to lead build up.
I do have an A1 flash suppressor on the end of one of my 22LR's.....I took it on the lathe and ran a tap drill for the 1/2-28 threads thru it so that I didn't have an restrictions at all. (about .468" dia).
Other than that, I've pretty much stopped using muzzle breaks on the rifles.........and it don't matter if you use copper washed bullets or straight lead bullets, you still get the lead build up.
Tim
A muzzle brake that closes tightly around the exiting round can cause accuracy issues.
A2 style opening, no problems. It should be no problem using the 7.5" but accuracy of 40
grain bullets won't be fantastic with a 1:7" twist. Aguila makes a 60 grain bullet that might
be the ticket when better accuracy is needed. Otherwise any bulk ammo but Remington
will suffice.
Good Luck.
Dave S
1. Barrel length shouldn't matter as it doesn't use any part of the gas system to cycle the 22LR conversion action, I believe it's whats called direct blow back operation.
2. With an A2 flash hinder I have never had issues with the bullets tumbling. Granted they aren't the most accurate due to the 1:9 twist, rather than what the normal rate of twist, but they don't come out of the barrel tumbling as far as I am aware of, and my targets don't show sings of tumbling bullet either.
3. You accuracy is going to be far worse than it would with a barrel with 1:9 twist, or standard 22LR twist rate. I have gotten decent accuracy out of my conversion with the 60gr Aguila bullets.
As far as ammo I have had great luck with Federal, the last box of Winchester I got about 10FTF out of a 500rd box, they all had solid hits on were in three different rifles. I would not use Remington 22LR I have read about a lot of problems with the new stuff, I have some Remington subsonic that is about 20 yrs old, I had about 3000rds not one FTF or any other issue.
