Squishy 1,149 Posted November 20, 2012 Report Share Posted November 20, 2012 What could cause a strike like this, bad firing pin? Sig Sauer P220 btw... Quote Link to post Share on other sites
Shotgun12 205 Posted November 20, 2012 Report Share Posted November 20, 2012 An ever so slightly bent firing pin. The impact strikes where it is slightly indented and meets resistance due to the firmer rim of the primer resulting in the pin to find a path of lesser resistance by sliding over and releasing the remainder of it's momentum into the center of the primer. Just a guess. Quote Link to post Share on other sites
Squishy 1,149 Posted November 20, 2012 Author Report Share Posted November 20, 2012 Makes sense. Wonder how that would happen? My plan of action (once I get some punches) is to replace the pin and spring. Never took a slide apart before but it can't be that difficult right? (Famous last words) Quote Link to post Share on other sites
thebuns1 4,323 Posted November 20, 2012 Report Share Posted November 20, 2012 Maybe a bur on the pin? Or possibly, nothing. It may have came about from under recoil of the weapon after striking the primer. Do they all look similar? Quote Link to post Share on other sites
sunnybean 939 Posted November 20, 2012 Report Share Posted November 20, 2012 Old school typewriter "," comma. ;-) 1 Quote Link to post Share on other sites
Squishy 1,149 Posted November 20, 2012 Author Report Share Posted November 20, 2012 Do they all look similar? Yep, switched to different make cartridge, same thing. I'll throw this out, I became interested in the thread about letting a slide go with nothing in the chamber, would or would it not do damage...and it got me wondering because I do this all the time. Some say it matters not, others aren't so sure... Quote Link to post Share on other sites
thebuns1 4,323 Posted November 20, 2012 Report Share Posted November 20, 2012 Yeah I wouldnt let it bother you. And doing that shouldnt let the firing pin get damaged. Quote Link to post Share on other sites
beefcakeb99 572 Posted November 21, 2012 Report Share Posted November 21, 2012 seems to be a common thing about striker fired pistols. I have read about this before, use a little google-fu and you should be able to find it. Quote Link to post Share on other sites
Stansplace 414 Posted November 22, 2012 Report Share Posted November 22, 2012 Don't sweat it and shoot the hell out of it. I noticed the same thing on an XD and freaked and then researched. Apparently pretty common in autoloader pistols. I have ran thousands through a .40 and each and everyone had the same mark. Quote Link to post Share on other sites
kresk 10,063 Posted November 22, 2012 Report Share Posted November 22, 2012 Have seen it with Glocks too. Quote Link to post Share on other sites
Squishy 1,149 Posted November 23, 2012 Author Report Share Posted November 23, 2012 It does fire that's for sure but at one time it didn't do this and it seemed to start doing it rather abruptly. So when something changes in a noticeable way suddenly it does cause me to wonder why.. I have a new pin and spring on the way so I'll be interested in seeing what the old pin looks like. Quote Link to post Share on other sites
Stansplace 414 Posted November 23, 2012 Report Share Posted November 23, 2012 It didn't do it, or you didn't notice it? Quote Link to post Share on other sites
Squishy 1,149 Posted December 4, 2012 Author Report Share Posted December 4, 2012 It didn't do it, or you didn't notice it? Sorry for the delayed response...it didn't do it, I'm certain of it. I can't say it started over night though...anyway, I've got the stuff to replace the pin so I'll just hang on to it and keep an eye on my spent brass to see if it changes. Quote Link to post Share on other sites
DrThunder88 912 Posted December 4, 2012 Report Share Posted December 4, 2012 Firing pin drag is pretty common, and that by no means looks severe. If the gun is new, maybe it's just been broken in? Quote Link to post Share on other sites
Squishy 1,149 Posted December 4, 2012 Author Report Share Posted December 4, 2012 Firing pin drag is pretty common, and that by no means looks severe. If the gun is new, maybe it's just been broken in? Not new, an LE turn-in but it was spruced up by the seller who is a SIG armorer. Quote Link to post Share on other sites
XdamagedX 248 Posted December 6, 2012 Report Share Posted December 6, 2012 I read info stating that COULD indicate bad timing in the pistols action.... grain of salt, and alternate possible explanation fwiw Quote Link to post Share on other sites
Squishy 1,149 Posted December 6, 2012 Author Report Share Posted December 6, 2012 I read info stating that COULD indicate bad timing in the pistols action.... grain of salt, and alternate possible explanation fwiw Thanks, I'll investigate this possibility. Quote Link to post Share on other sites
XdamagedX 248 Posted December 7, 2012 Report Share Posted December 7, 2012 That info was based on custom 1911 building, but again: another angle is always good in my book. Keep us updated. Quote Link to post Share on other sites
TonyRumore 1,332 Posted December 7, 2012 Report Share Posted December 7, 2012 You can also get those wipe marks, usually with magnum autos, where the action starts to unlock while the firing pin is still forward. With the pin into the primer, the barrel drops downward as it unlocks, "wiping" the firing pin across the primer. Tony 1 Quote Link to post Share on other sites
YOT 3,743 Posted December 10, 2012 Report Share Posted December 10, 2012 Thanks for the explanation, Tony. That makes lot of sense. Should that cause concern about bending the firing pin? Quote Link to post Share on other sites
unclejake 428 Posted May 13, 2013 Report Share Posted May 13, 2013 seems to be a common thing about striker fired pistols. I have read about this before, use a little google-fu and you should be able to find it.Squish, looks like about all of the Glock fired casings I have seen. A kid at work first pointed it out to me with his new 23, and I told him that that my 26 did the same thing Shape of the firing pin. No issues, just the way most striker fired pistols leave their love tap. Quote Link to post Share on other sites
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