Thanks for the advice Cayugad. I liked my .50 cal, but just thought a .54 would give me a little more confidence on big game. I am fortunate enough to have family in Alaska, and family who owns land in Ghana Africa. My .50 with a 1:32 barrel shot conicals nicely, but I am worried the 1:48 .54 might not like them. Is it true that the bigger the caliber the slower twist rate you can get away with with conicals? I am not that worried about local availability of bullets, there is always the internet.