Recently bought a cz 550 safari in 416 rigby. I don't have a whole lot of interest in full power jacketed loads in this rifle. I do have a rcbs 416-350 and sizing die in route and about 1 k checks came with the rifle . I am familiar with the 50-55 grain loads of aa-5744 . I was wondering if anyone had and loads worked up with slower powders. I have lots of 4350. 4831 and varget