southernpew
Bearcat
Buy the 450 Bushmaster and go with the AR15 Magazine setup much easier while i have the AICS feeding they are still not perfect but ill keep at it. Unless you will be using this with Lehigh 570gr Subs then you would need the AICS mags.
I just measured mine with the Magpul stock the shortest barrel would be 13"
This is the only reason I went ahead with the AR mag. All of my cast and loaded 458 rounds have room left in the AR mag and if I buy a handful of longer projectiles, I’ll just single load them.