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Out of pure curiosity, why would you want to shoot 55gr subs?
Have you fired full speed through it....its still pretty quiet.
I shoot 204 ruger through my much crappier 30 cal can and its pretty quiet.
Yes, it's quiet but no where near as quiet as subsonic. Subsonic is movie quiet.
Only drawback in an AR is it will be single shot only. 22lr conversion kit suppressed will cycle conversion kit.
The conversion kit cycles the conversion kit? You don't say.....
You get .22lr ballistics and suppression without the need for a 22lr conversion kit and the mess associated with shooting 22lr in an AR.
I've worked up 62gr loads with Trail Boss and there is no issues with 1-7 twist (your mileage may vary). VERY quite and accurate.
Sounds like an expensive way to shoot 22lr basically. Youre going to need a different buffer, and gas block if not opening your gas hole too. I'd spend a few more bucks and get the conversion and be done with it.
60gr aguilas run awesome out of my AR witj the cmmg conversion kit and my sparrow hanging off the end. Quiet and hit dang hard for what they are.
Couple rounds of full power 223 clears the gas tube out just fine. I just dont get the point of spending 5x the money to shoot 223 subsonic.
Who gives a shit if its movie quiet?
If you shoot full speed ammo at living targets...they will never hear it. They will be dead or down before the sound gets there.
And I've shot tons of critters with subsonic .22lr....the sound of the round hitting the target is pretty loud at times. And ricochets are night and day noticeable.
There is no point shooting subsonic centerfire .223 when rimfire ammo is way cheaper.
And when shooting live animals your gonna want the energy on target the speed is supplying.
Sounds like you need a rimfire can on a solid rimfire platform.
M&P 15-22 Performance Center suppressed/ AAC Aviator - YouTube
It's nothing more than an alternative to .22lr. I shoot both the conversion kit and .223 sub for shits and giggles. Nothing more nothing less. I like to reload and I worked up a load "because".
I've used 55gr fmj's with ABOUT 4.5gr Trailboss if I remember correctly. I don't have access to my data right now. I think 4.5gr is right around the point where some went supersonic and some didn't. POI is like 11" low from a 100yd zero with a 16" 1/9 twist bbl.
When you check for good stabilization, check it within a foot of the muzzle. I do this by setting up cardboard right in front of the gun, another piece about 25 yds and finally 1 about 50 yds. Line them up and shoot through them all at once, making sure you get nice round holes. Only after testing good with several rounds do you install the can.
I have only 1 can, a YHM 7.62 QD Ti. Works very well.
thanks for the input will give this a try. i ran a test at 20 yards with good results i'll do the shoot through method next week.