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Posted: 4/6/2011 3:03:54 PM EDT
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I went shooting with my 91/30 and as I was picking up my casings I noticed these 7 that were split, some split twice on opposite sides. Its only 7 out of about 60 rnds that I fired so I'm not worried about it, but I was wondering if somebody could tell me what causes this. The rounds are russian silver-tipped and the headstamp is 70 and 65 with the 70 on top, if anyone's interested. There was also on .223 case with a split neck.
http://i1178.photobucket.com/albums/x369/68WASR/Splitcasings.jpg |
| Most of the time, split necks are caused by brittle brass. It becomes brittle from repeated firings and reloading or old age.. Since your casings were probably not reloaded it is also possible that the casings, weather brass or steel were made with a poor alloy and were brittle. I had some ww2 british 303 ammo that was made in 1942. Just about every round that I fired split the neck. If you have fired this rifle previously with other ammo and it did not split the neck, then it's probably a problem with this batch of ammo. If this is your first time, try different ammo. If these split, there is probably a roblem with the rifle. |
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Happens to me on just about every Mosin I own. No problem.
Definitely check the chamber out though on any Mosin by inspecting it directly (preferred) or at least firing a few new rounds with soft brass cases (like Wolf/S&B, etc). Check the spent cases for bulges or large scrapes from a difficult extraction. I have run into a few rotted chambers that are now wall-hangers. |
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