Failure to go into battery every time

[DonVoigt]

Originally Posted by spangy

They replaced them with a fluted pin that has a grove to allow gas to escape and this might have accounted for the original breech block damage if it occurred.
And having Dr.GT look @ it is an offer too good to refuse in my book .... good luck M8

Sprangy,
That is not the original or intended purpose of the grooves, they are there to collect gunk, dirt, trash and allow the striker to still function.
It is however often repeated "common knowledge" that is just not accurate.

This subject has been the focus of several threads, but if one simply observes the location and extent of the grooves, it is clear that there is nowhere for any trapped gas to go, even with the striker to its full rear position.