Went to zero my Browning A Bolt this morning with my normal load of factory federal powershok 100gr, loaded up the mag of 4, released the shot, round went down range. Now the problem started, bolt handle lifted, but, wouldn't pull to the rear, several hours later and a good boot on the bolt handle eventually it goes back and the brass case extracts. On eamining the case the percussion cap is sitting proud and the case has several points of scoring along the length of it with the neck slightly burred. Was it just a crap extraction or did the round have too much pressure and caused expansion of the case?
Any ideas as i'm considering ditching the batch?