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Casing Damage 223/AR15
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Site Supporter   Location: Lakewood, WA Joined: Sat Apr 14, 2012 Posts: 4056 Real Name: brad aka bubba 
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Cases go in clean, and come out like this..
my and cyclone were wondering what could cause this type of case scarring/dmg you can tell the last little bit of the casing near the bottom is clean and undamaged.. Each casing ejected fine... tight barrel?  _________________ ALL MY FIREARMS WILL ONLY BE TRANSFERRED THROUGH I-5 Guns And Ammo (Lacey WA) |
| Mon Jun 09, 2014 2:11 pm |
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Site Supporter  Location: McCleary Joined: Fri Mar 7, 2014 Posts: 2003 Real Name: Andy
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New barrel?
Old barrel, first time seeing this after firing a lot of rounds? Hand loads or factory? What do the primers look like after being fired? What does the case head look like? What powder, bullet, primer combo and charge weight if it was a hand load? Did you crimp? What does your crimp look like? Possibilities. 1. Dirty chamber. Fix with a thorough cleaning. 2. Scored chamber. Fix with a bore mop on a short cleaning rod, drill, and VERY fine polishing compound. 3. Very high pressure. Confirmed by flat primers and flow of metal into the extractor section of the bolt face. Fix = follow published loads and work up from minimum, not over crimping, but allowing enough crimp so you don't experience bullet set-back, which causes pressure spikes. _________________ It ain't bragging if you can do it. |
| Mon Jun 09, 2014 2:31 pm |
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Site Supporter Location: Lakewood, WA Joined: Sat Apr 14, 2012 Posts: 4056 Real Name: brad aka bubba
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dogfish wrote: New barrel? Old barrel, first time seeing this after firing a lot of rounds? NEW BARREL Hand loads or factory? FACTORY LOADS AND HAND LOADS What do the primers look like after being fired? NO PROBLEMS WITH THE PRIMERS LOOK LIKE THEY SHOULD What does the case head look like? LOOKS FINE, NO DMG What powder, bullet, primer combo and charge weight if it was a hand load? Ill GET THE SPECS Did you crimp? NO ON THE HANDLOADS http://www.hornady.com/store/223-Rem-.224-2-Die-Set/ UNSURE ON THE FACTORY What does your crimp look like? SEE ABOVE Possibilities. 1. Dirty chamber. Fix with a thorough cleaning. 2. Scored chamber. Fix with a bore mop on a short cleaning rod, drill, and VERY fine polishing compound. 3. Very high pressure. Confirmed by flat primers and flow of metal into the extractor section of the bolt face. Fix = follow published loads and work up from minimum, not over crimping, but allowing enough crimp so you don't experience bullet set-back, which causes pressure spikes. The loads were off the hogdon website using the lowest load at 26 Hodgdon CFE 223 .224" 2.200" 26.0 3,133 43,300 PSI 27.8 3,329 51,300 PSI _________________ ALL MY FIREARMS WILL ONLY BE TRANSFERRED THROUGH I-5 Guns And Ammo (Lacey WA) |
| Mon Jun 09, 2014 2:38 pm |
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Site Supporter Location: McCleary Joined: Fri Mar 7, 2014 Posts: 2003 Real Name: Andy
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Just trying to elimnate all possibilities. Most likely a rough chamber then.
Outer's cotton bore mop and some polishing compound should take care of it. Try a .40-44 cal mop. Inspect with a bore light first. Then take a few sections of cleaning rod (mine break few into 8" sections), add the bore mop and chuck in a drill. Go slow, I wouldn't run it for more than a minute or so, clean, inspect, shoot if possible. then repeat until you are fine with the result. _________________ It ain't bragging if you can do it. |
| Mon Jun 09, 2014 3:55 pm |
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 Site Moderator   Location: Marysville Joined: Thu Mar 22, 2012 Posts: 13520 Real Name: Mike
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Is this something he could just polish out with some lapping compound and a bore brush chucked into a drill?
_________________ Licensed/Bonded/Insured Hardwood Floor Installer/Finisher http://www.hardwoodfloorsnw.com/ |
| Mon Jun 09, 2014 5:54 pm |
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Site Supporter  Location: 1.5 hour N of seattle, sedro woolley Joined: Wed Oct 26, 2011 Posts: 1708 Real Name: J.
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Deleted
_________________ If it doesn't run on 2 wheels or a trigger... save your breath i'm, not listening. Last edited by harleyjasondavidson on Sat Dec 19, 2020 7:04 pm, edited 1 time in total. |
| Mon Jun 09, 2014 6:15 pm |
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Site Supporter  Location: West Phoenix, AZ Joined: Tue May 21, 2013 Posts: 3909
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Unless your fingernail catches, don't worry about it
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| Mon Jun 09, 2014 6:32 pm |
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Site Supporter Location: Lakewood, WA Joined: Sat Apr 14, 2012 Posts: 4056 Real Name: brad aka bubba
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XDM9cWA wrote: Unless your fingernail catches, don't worry about it nothing "catches" on the scarring parts.. but Ill still do a complete clean and little bit of polishing just to smooth it out a little more. _________________ ALL MY FIREARMS WILL ONLY BE TRANSFERRED THROUGH I-5 Guns And Ammo (Lacey WA) |
| Mon Jun 09, 2014 9:47 pm |
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