I have been using IMR 4350 to load 350 and 500 Grain bullets for my 460 but can not find any right now, but I did find some IMR 4320 but the load data I checked shows a lot more pressure for about the same speed. I guess that is because of a different burn rate, but is there any negative affects to the increased pressure like case life or wear on the rifle? I am probably going to use it since I can not get anything else right now but thought I would ask anyway.
Thanks
Thanks