Purchased a .308 F T/R and it does not fire on every shot. Checked headspace on rounds that did fire and new Lapua brass and there are within specs. Fired brass runs 0.004-0.008" over minimum using the Redding Instant Indicator. New brass runs 0.003-0.005" over minimum.
I can see a very faint primer firing pin imprint on the rounds that failed to fire. The ones that fired look normal. Primers are seated 0.001-0.002" below in the pocket.
I am thinking along the lines of a firing pin malfunction or failure to protrude far enough on release.
Would appreciate the advice of others who have experienced a similar problem.
Thanks