Caseknife
Well-known member
So first time loading subs for my Ruger Am GenII. The bullets are Lehigh 198 Controlled fracturing, using load data from Lehigh. Standard practice for loading subs is to start high and go down to alleviate stuck bullets in the bore. Using H110 and CFE Black, loading 4 rounds of each weight, the first round of each group was kind of what was expected for velocity, but each round fired after went down in velocity significantly to the tune of 100fps+. Weighing each load with a balance beam. Haven't changed my process at all and have been loading for 40 years. Kind of confused, any insight as to what may be going on?
