The new guy from Oregon

[Thekid76]

I have just laid my hands on a 550 416 CZ and would like some advice for getting a 300 gr bullet over 3000fps inside this action. would like some sound advice and getting started caliber choices. this is my first spread into the wilds of larger bore diameters, my latest is a 6.5-06 with a schieder barrel on an old Mauser action that shoots into the .3s very easily. now i want to hit the mark at ranges over 1500 and maybe even 2000. what can anyone tell be about the big 338ts that will fit into the 550 CZ or 602 Bruno? Marc LeQuieu