soundlzrd Posted May 15, 2016 Share Posted May 15, 2016 I loaded up some 9 mm with 147 grn coated lead bullets with 3 grn titegroup. The primers look like this when shoot from my glock 26 and 19. Is this normal? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
GrumpyOne Posted May 15, 2016 Share Posted May 15, 2016 Crappy pic, but I would say yes. The edges are still round, no signs of flattening or cratering. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted May 15, 2016 Share Posted May 15, 2016 Looks good - are you worried about something? What was the velocity? Link to comment Share on other sites More sharing options...
blackhand Posted May 15, 2016 Share Posted May 15, 2016 Glocks leave a rectangular impression from the firing pin. I thought this was what's known as primer flow. I was concerned at first, but I see the same marks on factory ammo. My usual target loads are much softer than factory, so I don't worry about it anymore. Link to comment Share on other sites More sharing options...
soundlzrd Posted May 15, 2016 Author Share Posted May 15, 2016 Black hand thank you! I was concerned because I had not seen it before. Hi-power jack, I am not sure yet. Need to crono. Grumpy, thanks. I uploaded the wrong photo. But I've not seen flattening and feared that's what I was starting to see Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
9x45 Posted May 18, 2016 Share Posted May 18, 2016 Your load is fine, all Glocks leave a mark like that. The primer is nice and round, not flat, you can read the head stamp. No worries Link to comment Share on other sites More sharing options...
Ultimo-Hombre Posted May 18, 2016 Share Posted May 18, 2016 Your load is fine, all Glocks leave a mark like that. The primer is nice and round, not flat, you can read the head stamp. No worries Wow. I've flattened out some primers but have never seen the head stamp get deleted like that! Good pic! Link to comment Share on other sites More sharing options...
soundlzrd Posted May 18, 2016 Author Share Posted May 18, 2016 Wow that is a great picture and I finally know what to look for as an issue! Looks scary! Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Miranda Posted May 18, 2016 Share Posted May 18, 2016 the flattened primer is ... umm... worrisome. that stamp from the chamber and ramp is the scary indicator.... oh so close. miranda Link to comment Share on other sites More sharing options...
GrumpyOne Posted May 18, 2016 Share Posted May 18, 2016 The headstamp could also be from a piece of brass that has been reloaded a zillion times...after it goes through the tumbler so many times, the headstamp can and will rub off...i have seen 45 acp brass with no headstamp on it, not from over pressure, but because it had been reloaded a zillion times. Link to comment Share on other sites More sharing options...
blackhand Posted May 18, 2016 Share Posted May 18, 2016 Another thing to watch out for with Glocks is making sure your primers aren't too soft or seated too high. Before I had my press dialed in and getting the primers to sit below flush, I'd see a pierced primer on occasion. The firing pin spring on Glocks is pretty stout, ensuring that all different kinds of rounds go off. But the rectangular dimple on the primer combined with an extra strong striker spring, and you could find erosion on your breech face. Maybe avoid softer primers, like Federal, and make sure your primers are seated below flush to be on the safe side. Link to comment Share on other sites More sharing options...
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