i have a dpms 20 heavy 1 in 9 .556. i am curious if anyone has loaded ballistic tips. i have some rl 15, varget, and tac powders. i have not loaded for a gas gun before, only bolt guns. want to be careful due to my lack of experience with these. also have to by dies, will .223 rcbs dies work for this? what about the crimp? i also have some 52 gr nosler custom comps. will these be better than the bal. tips? thanks