Re: 300Blackout - What can?
First of all, <span style="font-weight: bold">THANKS</span> to all you guys for the great replies and for the pics of your 300BO set-ups. Definitely some hot guns out there, with interesting variations to consider.
Perhaps I should have been a bit clearer in my initial post: I already have a .30cal suppressor. It the OPS 3rd model, typically a dedicated bolt can.
I've had the barrels on 2 .308s, one 30.06, and one 5.56mm AR profiled and collared for it. I've got a buddy looking to get rid of his Sav .223 Predator that I might snatch from him and have the barrel set up for the OPS as well.
In other words, <span style="font-weight: bold">one can, multiple guns.</span>
But the OPS 3rd is a long can at 12". Approximately 5" of the can thread on back over the barrel where it lines up on the collar. That leaves approx 7" of can for the projectile to traverse.
That's why I asked what minimum barrel-length is needed to stabilze the subsonic 300BO bullet (and, I assume, a 1/7 twist), as I don't want to risk baffle strikes after the bullet enters the can.
I like Dr. Phil's set-up and I'm glad to hear the Seekins rail has enough internal diameter to accept a thick can.
Not really wanting to go thru the time, expense, paperwork and sign-offs for a smaller, shorter 30cal in order to get into the suppressed 300BO game. That's also why I asked about bolt-gun set-ups, in case the OPS 3rd's length makes the AR platform impractical.
Here's the set-up on a 16" 5.56mm MRP tube: looks wierd I'm sure, but it's fun to shoot and suppression-effective on the 5.56 blast.