M 305 slam-fire

savagefan said:
Read the manual on my new Poly and it warns against using civvy .308 ammo as the primers are soft enough to allow a slam-fire. Has this happened to any-one here?
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While I have a new Poly on the way, I haven't seen said manual. However I did have one with a 2007 Norc and that manual looked like exactly like the one I got with my Springfield M1A many moons ago. I am assuming the Chinese just copied, the manual as well. With all the U.S. inspired legal ass-covering.

As has been said, Slam-fire (or worse, out-of-battery discharge) is a possibility with any auto-loading, floating firing pin design.

I have seen a couple with M14/M1A types over the years, more though with SKSes.
 
You will die if you even ATTEMPT shooting ANY form of ammo out of your Norc M14S...I STRONGLY suggest you lock it in your cabinet forever OR cut it in half so no one else may ever be harmed by these monstrocities....
 
Just got back from the range. Had to test out the reports that m14's matter of course dent the primers of cases when the chamber closes. I couldnt' find any evidence of that after firing a shot and then manually ejecting the next unfired cartridge that was chambered. Not even a trace of a dent. These were IVI military cartridges. I understand their primers are harder, but that much harder?
 
Well we took out a brand new Poly today. Before the rifle was fired we spent some time getting it cleaned up nicely and it was function tested once put back into it's stock.

Today after shooting we took the rifle apart and cleaned it. Then back into the stock for a function test which found that after the action was fired and recocked it would not fire again. The hammer was following the bolt closed. We tried a couple things to get the rifle to go through a proper function test and were unsucessfull until I put the rifle into a USGI maple stock. Looks like we're going back to the shop for a little assistance from a Smith.
 
Grizzlypeg: Make sure your bolt is clean. The free-floating firing pin should tap the primer, every time, all the time.
If it isn't, there might be a problem.
 
Petrock, it sounds like the sear isn't engaging the hammer. I held back the sear on my mini14 years ago and that was the result.
 
My firing pin is loose enough in the bolt that I can tilt the rifle foward and watch the firing pin protrude, or tilt the rifle back and watch it disappear back into the bolt. No failures to fire either. I'm skeptical that the floating pin is a real problem. I suspect other co-factors must exist to get a slam fire. I've shot lots of Federal hunting ammo through this rifle and no slamfires either.
 
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