Hello,
I have recently finished a 300magnum build on a 110 that was trued by K Cram at Montour CO Rifles. All is good and the Shillen select seems to be doing a good job. HOWEVER,,,,,,,,,,,,

Roughly one of every three to four shots (I've only fired about 10 rounds) the primers aren't igniting. The primers are fine and have been stored well. The pin protrusion is about 56thou and the rounds always go the second time. They look like they were smacked good the first time also! I have put a wolf up power spring on the pin hoping to shorten lock time.

Any ideas? Is there some timing adjustment I'm not aware of????

Headspace is fine. a go guage is smooth and one piece of cellophane tape on the guage locks the bolt up high and early.

I also prep brass pretty well by uniforming primer pockets etc,,, zthe primers are all sitting normally.

I can't figure it out

Vassal