Mystery Ranch starting making game bags recently. You might want to check them out. Some of their stuff is made in the USA, so it is possible that the game bags are too (though I kinda doubt it).
I've been very happy with my 7mm RM shooting a 145 grain LRX bullet, but I've also killed elk with my 270 shooting 110 grain TTSX bullets.. I agree with the posts above. People put too much faith in big calibers when shot placement and bullet construction are what really matters.
My scope is a 6-24x, but I really only use the 24x for target shooting and occasionally for triple-checking that an animal is legal by measuring antler length using the MOA ticks in the reticle . I want to be able to see my impact and track the animal after the shot, so I'm usually zoomed to...