I need opinions from people using the Bell & Carlson A5 or A2 with a LA caliber. Most everything I found online was guys using the A5 on .308's. I wanna know how to holds up being using with a .300 RUM and larger LA calibers. How's the butt pad on the A5 and since it's adjustable will it withstand the recoil without slipping. I have never personally handled either one of these stocks and don't wanna spend more than $500. I do like the added weight of the A5 over the A2 and the adjustable cheekpiece will come in handy. Thanks for the help!