With the M14 platform, I have found I always have to top up the mag so the rifle is never fired with an empty mag under a chambered round. The upwards pressure on the bolt from the rounds in the mag seems to affect groups. And yes, the 5 round flier is an M14 thing.
As Jerry pointed out, the change in bolt cycling can affect barrel harmonics. The follower in empty mag rubbing the bolt is change in variables from a round rubbing the bolt in the previous 4 shots.
As Jerry pointed out, the change in bolt cycling can affect barrel harmonics. The follower in empty mag rubbing the bolt is change in variables from a round rubbing the bolt in the previous 4 shots.
