Re: load data 300 win mag &280A.I.
Cci br2 primers
This load did 2980 fps out of a 25" barrel
You need to know how much your jumping the vlds and your seating depth needs to be spot on consistent.
You should try an OCW test to establish your charge weight and then do the berger seating depth test. Find the charge weight first then use the same charge weight for all loads in the seating depth test.