https://www.polycase.com/customized-enclosures
I've been doing this kind of stuff for a living for about 45 years. Lately, I've been using Polycase for enclosures when the price point is tight. They do custom cut (Laser/CNC) enclosures, beats the snot out of cutting a bunch of holes, (square...
If that's all you have, or you're getting it dirt cheap, I'd shoot it. I have shot it in my M14's, actually have shot a lot of it. I've shot a lot of different powders out of Service Rifles because I shoot that discipline. I NEVER liked Var-gay (Varget) or RL15 which many other Service Rifle...
I wish we could be its against the SOP of the range to a harass the wildlife. You'd be surprise how much flak we get from hunters about the range. We've had some that want the range closed during hunting season. The shooting does not bother the deer or the hogs I seen them many times while we're...
The M14/M1A, a grooved gas piston helps but not necessarily needed. There are numerous adapters for the muzzle end. I would not use any of the adapters that are held on with the castle nut. Even with a Titanium silencer that's a lot of hanging weight on the end.