Originally Posted by tacxplosion
Leak out the breech is either front bolt o'ring or front pin o'ring, the bolt shooting forward when higher pressure is applied leads me to believe the 3rd o'ring from the back might also be bad. I'd suggest rebuilding the bolt and pin completely and lubing with dow55, it might be a tolerance issue.
Had this problem earlier. Relubed the bolt and the leak around the eyes/ feedneck disappeared