TennJeep1618 Posted July 1, 2015 Share Posted July 1, 2015 (edited) I've never seen this before, so I was wondering if one of you might enlighten me on what caused it. This was a hole in a target after one of my runs this past weekend: Is that unburned powder that created the spiral? The barrel only had about 50 or 60 rounds through it since the last cleaning and I've never shot any lead bullets out of this gun, only plated. CZ 75 9mm 147gr Extreme PLRN 3.2gr Titegroup Edit, this target was only 2-3 yards away. Edited July 1, 2015 by TennJeep1618 Link to comment Share on other sites More sharing options...
Sarge Posted July 1, 2015 Share Posted July 1, 2015 I see those a lot on close range targets. Always wondered if it was powder, bullet type or something else. Link to comment Share on other sites More sharing options...
TennJeep1618 Posted July 1, 2015 Author Share Posted July 1, 2015 I see those a lot on close range targets. Always wondered if it was powder, bullet type or something else. Yes, this was a close range target. I forgot to mention it, but I edited my post to include that info. Link to comment Share on other sites More sharing options...
works for ammo Posted July 1, 2015 Share Posted July 1, 2015 If your shooting plated bullets and the crimp cuts through the plating You will see this. Link to comment Share on other sites More sharing options...
TennJeep1618 Posted July 1, 2015 Author Share Posted July 1, 2015 If your shooting plated bullets and the crimp cuts through the plating You will see this. Hmm. I don't believe I'm over-crimping, but I'll definitely check into it. Thanks! Link to comment Share on other sites More sharing options...
Sarge Posted July 1, 2015 Share Posted July 1, 2015 (edited) I see it when some are using coated bullets as well. Could be the same principle with too much crimp exposing bare lead or not enough bell shaving the coating off Edited July 1, 2015 by Sarge Link to comment Share on other sites More sharing options...
EngineerEli Posted July 1, 2015 Share Posted July 1, 2015 Not sure why, but I noticed this a while ago at some matches and it turned out that everyone who's guns were doing this were using Frog Lube. Could have been a coincidence, but I remember thinking that was the reason, though I cant remember why right now... Link to comment Share on other sites More sharing options...
Vlad Posted July 1, 2015 Share Posted July 1, 2015 I'm pretty sure my CZ used to do that with FMJ bullets with crimp not being an issue. Link to comment Share on other sites More sharing options...
Guy Neill Posted July 2, 2015 Share Posted July 2, 2015 We originally called them "comet tails" when we first saw them at Speer. As I recall they determined that it was due to the plating cracking or being cut through by the rifling. Guy Link to comment Share on other sites More sharing options...
shotgunone Posted July 3, 2015 Share Posted July 3, 2015 We call them grease rings. It's caused by the powder residue in the barrel being transferred to the bullet as the bullet passes through the barrel and then rubbing off on the cardboard as it passes through. Link to comment Share on other sites More sharing options...
Vanniek71 Posted July 3, 2015 Share Posted July 3, 2015 The big spirals are from powder. Always see it on close targets where the blast is getting to it. I don't have plated bullets, barely crimp, and it only happens on up close targets... Link to comment Share on other sites More sharing options...
56hawk Posted July 3, 2015 Share Posted July 3, 2015 Not exactly the same shape, but I have seen this with everyone who shoots hollow base bullets. Leaves a gray donut around the bullet hole. Link to comment Share on other sites More sharing options...
Gunnar Posted July 5, 2015 Share Posted July 5, 2015 I have seen this with plated, jacketed, coated always at close shots. I always thought it was the coat coming off the bullets. Link to comment Share on other sites More sharing options...
a matt Posted July 19, 2015 Share Posted July 19, 2015 Unburned powder from the barrel...If it was the plating coming apart we would have a mess with accuracy with any shot other than point blank range. Link to comment Share on other sites More sharing options...
cnote Posted July 19, 2015 Share Posted July 19, 2015 not the grease ring, the big spiral is what he is talking about, lots bigger than the bullet diameter Link to comment Share on other sites More sharing options...
Vanniek71 Posted July 19, 2015 Share Posted July 19, 2015 What a Matt said. It's powder! Link to comment Share on other sites More sharing options...
Unregistered Posted July 21, 2015 Share Posted July 21, 2015 I had these shooting plated bullets in my open gun. Went away once I went to jacketed bullets. Link to comment Share on other sites More sharing options...
ChrisRR Posted July 23, 2015 Share Posted July 23, 2015 (edited) I have. You were close to the target. It's either lead or powder I believe. A nick in the plating is my bet. Sprays lead as it spirals. Sent from my iPhone using Tapatalk Edited July 23, 2015 by ChrisRR Link to comment Share on other sites More sharing options...
Dranoel Posted July 25, 2015 Share Posted July 25, 2015 (edited) I think it's from leaving your ammo out in the sun and the bullets are getting sun burnt then peeling when they hit the cooler targets. Or it could be that you hit an invisible pocko lips zombie and it's blood spatter from it. Could also be that someone was trying to tag your shots mid-flight with bio hazard stickers. On the other hand you might have got some of those spiral wound bullets and they wound them the wrong way and they're unraveling. Could also be from paper patching. Or it could just be the powder residue being sucked along in the bullets wake. Edited July 25, 2015 by Dranoel Link to comment Share on other sites More sharing options...
derekmelton Posted March 2, 2016 Share Posted March 2, 2016 Never noticed this before. Pretty interesting. Link to comment Share on other sites More sharing options...
a matt Posted March 2, 2016 Share Posted March 2, 2016 (edited) If your shooting plated bullets and the crimp cuts through the plating You will see this. Never heard of this? Edited March 2, 2016 by a matt Link to comment Share on other sites More sharing options...
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