Breech Block Failure 1916/1920 Erfurt

grantman · 01-18-2021, 08:53 PM

Wh at typically causes this; metal fatigue? Also, what would be the most likely cause of pierced primers; striker spring?

G.T. · 01-19-2021, 04:17 AM

Hi Grant, the two most common is, excessive headspace, and/or a deformed firing pin tip. (corroded, sharp point/edge) I'd say that covers about 99% of the pierce primer problems with factory ammo... best, GT

01-19-2021, 04:17 AM	#2
G.T. Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: Chandler Arizona Posts: 3,550 Thanks: 1,361 Thanked 3,778 Times in 1,028 Posts	Pin issues Hi Grant, the two most common is, excessive headspace, and/or a deformed firing pin tip. (corroded, sharp point/edge) I'd say that covers about 99% of the pierce primer problems with factory ammo... best, GT

01-18-2021, 08:53 PM	#1
grantman User Join Date: May 2019 Location: Northern Idaho Posts: 86 Thanks: 2 Thanked 36 Times in 23 Posts	Wh at typically causes this; metal fatigue? Also, what would be the most likely cause of pierced primers; striker spring?