So since my volume test I’ve loaded the 9.3x62 up to 58.5gr of RL15 with 270gr bullets. Primers started to flatten with this load. Ive loaded the 375 Whelen Improved up to 58.0gr of RL15 and a 270gr bullet with no pressure signs. I’m going to shoot 58.5gr this weekend. I think my theory was correct, that I could use 9.3x62 load data for the 375 Whelen Improved.


JTD