I want a brake attached can for multiple rifles so I'm looking at the Thunder Beast 338BA or a Surefire 30 cal. I don't have a 338 and don't really plan to but the TBAC and Surefire is about the same price so why not get the bigger one. I'm mainly curious about do they stay tight and accuracy. Also if there's another brand I haven't looked at that might be good let me know. Thanks