Old news and I've beat it up often.
.378" pin to bolt fit is usually horrid. This one worse than that. 50gr V-Max 223AI form loads,at 3150-ish fps...which is very obviously...very SOFT. Positive headspace via both the shoulder and a smooch.
The Cure.
Same lot of ammo,pre bushing.
Many would "think" high pressure,but these are underhand softballs.
Same lot,post bushing.
'Nother,for conversation.
Greg does all of mine and he touches upon it here. In fact,there should be another one freshly bushed,awaiting my arrival at the house.
Bye-Bye CratersHint.