Primers backing out?? 30/30

C

Coolhand_Luke

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Hi guys

I was just about reload some 30/30 ammo for my 1980s win 94, and i noticed something for the first time, the primers on once shot cases were VERY slightly backed out, just so i coould feel it with my finger. I looked over some older factory cases same thing, looked at some of my old handloads (light starting loads) same thing again. To contrast i looked over some of my other calibers and they were fine and normal.... What could this mean? It doesnt seem normal for a gun to do this.

Could this be a headspace issue? This gun is not very accurate even by levergun standards...

Thanks

Luke
 
Primers back out because the pressure of firing isn't pushing the case back to full engagement against the breechface. Even though the whole case doesn't go back, the primer does so it ends up sticking out from the pocket.

This is commonly caused by very light loads that generate too little pressure to force the case back, which I suppose is possible given the low pressure of the .30-30. It could also be caused by a recessed area around the firing pin hole, or debris or a bump on the breechface that stops the case early, or a rough chamber that really grips the case (combined with a stout head that doesn't yield and stretch back on its own).

Watch your reloaded cases for signs of accumulating damage or head separation, otherwise I wouldn't worry about it.
 
Ok thanks for the info, I was worried it might be dangerous and have to take it to a gunsmith. Like I said, none of my other guns have showed signs of this...

Edited to add: I looked over most of my fired cases, both factory and handloads, none showed any signs of any splitting only thing i noticed was some of the case necks were pretty sooty on the outside. I am not sure if that means anything...

Luke
 
too low a pressure is my guess, also sounds like your headspace maybe on the loose side, try the dental oring trick and report back?
 
pick up a pack of braces elastic from dentist put on base in front of rim, it will take up any excess headspace, then size to just kiss the shoulder.
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He mentioned factory.

I had the exact problem back in June with some brand new - out of box rifles. The issue had nothing to do with low pressures and everything to do with excessive "headspace". I bought gauges and all of them failed the Field gauge - which according to the instructions was to not fire and take firearm to a gunsmith for servicing.

My father in law has a '67" 94 Winny that he loaned me...it too was way over the limit for the rim spacing.
 
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