I would have a choice of 20 plus bolts and as many firing pin springs, I do not have rifles that are timid about hitting primers, not a price to pay but the long tough, hard to compress spring will result in difficulty in cocking (on open), the other hard hitters are the M1917s that are cock on close, a friend came over from the firing range with a box of Remington R-P 30/06 ammo, of the 20 5 did not fire even though the failed to fire were given 5 chances with 3 different rifles, I suggested they call Remington or the manufacture of the new rifle, instead he came over and we checked the 15 cases that did fore for length, diameter and the effect the chamber had on the case when fired, the fired cases chambered in my chamber gage with little effort, we tore down the 5 cases that did not fire all the way to removing the primers, we were impressed with the case dimensions, powder weight, bullets etc., etc.. I then installed the 5 time struck primers back into the same cases they were removed from then chambered them in one of my Remington M1917s, all 5 primers fired, again the strike of the firing pin did not go click, it went CLICK!!!!!!, those at the range were bashing Remington ammo.
I am a fan of the heavy hitting firing pins, even then the case, powder and bullet can not accelerate to a speed that would allow the total weight of the round to get to the shoulder of the chamber before the firing pin crushes the primer, and even though I did not have powder and bullet weight added to the case, the primer did not back out.
The shooter had 2 boxes of R-P ammo, he fired one box. The good part, he purchased the new rifle from the same place that sold him the ammo.
As a suggestion, remove a turn from the firing pin spring, as I said I could have choices, other springs, other bolts and I can determine the effect the test/replacement bolt will/would have on head space.
F. Guffey
