Firing pin cracked

John Sabato · 06-11-2014, 01:35 PM

My Money says that GT's experiment will not result in a slamfire...

I think the the firing pin would need the momemtum of a sudden full fall powered by the firing pin spring to result in a discharge with a locked breech.

If the front portion of the firing pin is broken free of the sear surface, I think that when the breechblock slams home, loading the cartridge from the magazine on it's way, that the firing pin spring will actually cushion and soften the blow of the firing pin and a discharge could not be depended upon... UNLESS you are using reloads with civilian grade small pistol primers... sealed Military primers take a good smack to set them off.

Just my $0.02 worth of mechanical engineering experience... take it or leave it. The test will tell the story.

06-11-2014, 01:35 PM	#32
John Sabato Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: The Capital of the Free World Posts: 10,156 Thanks: 3,003 Thanked 2,309 Times in 1,098 Posts	My Money says that GT's experiment will not result in a slamfire... I think the the firing pin would need the momemtum of a sudden full fall powered by the firing pin spring to result in a discharge with a locked breech. If the front portion of the firing pin is broken free of the sear surface, I think that when the breechblock slams home, loading the cartridge from the magazine on it's way, that the firing pin spring will actually cushion and soften the blow of the firing pin and a discharge could not be depended upon... UNLESS you are using reloads with civilian grade small pistol primers... sealed Military primers take a good smack to set them off. Just my $0.02 worth of mechanical engineering experience... take it or leave it. The test will tell the story. __________________ regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL *and are endowed by their Creator* with certain UNALIENABLE* rights, and among these are life, LIBERTY, and the pursuit of happiness..."*