What would cause this?
New rifle. 6GT
Impact action
Alpha Brass
31.0 g Varget
CCI magnum primers
Berger LRHT 109gr
.08 jump
First 20-30 times firing it it was very smooth. Then about 75% had really heavy bolt lift on maybe 60-75% of shots. this happened to one round. I don’t think it’s pressure. Velocity was 2670.
New rifle. 6GT
Impact action
Alpha Brass
31.0 g Varget
CCI magnum primers
Berger LRHT 109gr
.08 jump
First 20-30 times firing it it was very smooth. Then about 75% had really heavy bolt lift on maybe 60-75% of shots. this happened to one round. I don’t think it’s pressure. Velocity was 2670.