Home Forums Hunting & Shooting Ask The Gunwriters .375 Ackley improved?

I shoot a 375 Weatherby , but if I had a 375AI I would use starting loads for the Weatherby(Hodgdon has data) and work up . Top loads should be lighter because of maybe no freebore in the AI chamber . I would expect 2900+fps for 270 grainers and 2700+ for 300 s , with powders in the 4350 range .