Originally Posted by mtnwrunner
Just got my 375 h and h back from the smith where it was Ackley improved.
Looking for some pet loads that others may have tried and been successful with the tried and trued 375. I'll be using it in open country/longer shots on elk and maybe a big muley. Love to hear what others have used.
I have a 375 Weatherby, 24" barrel. My capacity is slightly less than yours.
I run 89gr of Win 760 behind a Nosler 260gr Accubond for over 2900fps, 92gr of H4350 behind Woodleigh 270gr PPSN for 2860fps and 90gr of 760 behind Woodleigh 300gr PPSN for 2780fps.
All loads developed in reformed Remington 375H+H cases and WLRM primers.
I started with max loads from 375H+H data until I had pressure tested loads to compare with, I was off by only around 2gr's in most instances.
I found powders like Varget and Re15 were not suitable with this case capacity, unlike in the parent case, the next slower powders as those listed work the best.