I got some 300gr PRVI RN to shoot out of my 375 Whelen Improved. Ive been using load data for 9.3x62, because they have almost exactly the same case volume ( I talked about that in another thread). My research has shown Western Big Game powder to be great with heavy bullets in the 9.3x62, so I gave it a whirl with this. I loaded up one round with 64.0gr, one with 64.5gr, and one with 65.0gr, just to look for pressure signs. 64.5 was compressed, 65,0 was very compressed, so I stopped there. I shot them at the range yesterday and had a surprisingly good group.



I need to load some more of these up and see what kind of velocity I’m getting. I’m hoping for 2300-2400fps.


JTD