Could have been. I've never seen in set back let alone as far as this one in any of the factory ammo I've shot over the yearsSlightly oversized primer pocket???
Can't say for sure though I doubt it. I think I would have felt it with my thumb. That is unless it was the first round dropped into the ejection portWas it like that when it went in the tube ?
What kind of action was it fired in? Manual action, did you pull back just slightly on the slide when it was fired?Anyone ever come across primer setback with factory loads before?
Please explain how an oversized primer pocket could possibly allow the primer to back out when the action is locked up and the shell held firmly against the breech face?Slightly oversized primer pocket???
I’d say it was just a faulty case with an oversized pocket. If it was that way before being fired the gun would either seat the primer when closing or prevent the gun from chambering the round. From the look of the primer I’d say no signs of high pressure. If there was more like it then I would have concerns about the firearm!!
Can you push the primer back in with thumb pressure?
If so it’s prob just a loose primer pocket
I think you guys have identified the problem. I was able to easily seat the primer back down with little thumb pressure. I cut the crimp section off the hull and can push the primer back and fourth about .02" between seated and sitting proud. It's the only shell out of all fired that day and now checked that exhibits this movement of the spent primer.I have heard of this being a problem with score. Primes don’t usually set back on shotshell even when over pressure.
I'm thinking the pocket was oversized but primer was seated. After firing & ejection, the shell hit the concrete pad on the firing line at the right angle allowing inertia to easily drive the primer partially out of a loose pocket.What kind of action was it fired in? Manual action, did you pull back just slightly on the slide when it was fired?
Please explain how an oversized primer pocket could possibly allow the primer to back out when the action is locked up and the shell held firmly against the breech face?
What makes you think a normal sized primer pocket holds the primer in place against 11,000 psi?
It SHOCKS me the number of people posting on this forum who fundamentally do not understand how firearms work.![]()
Oh absolutely. Chris thanks again to you and everyone else for your replies. Mucho appreciatedNice that it’s just a simple thing and not something serious with your gun! Keep burning powder and having fun. Cheers Chris
I'll buy this explanation as it makes sense.I'm think the pocket was oversized but primer was seated. After firing & ejection, the shell hit the concrete pad on the firing line at the right angle allowing inertia to easily drive the primer partially out of a loose pocket.
And yet you just posted a diatribe of how stupid another poster is for suggesting a loose primer pocket and the issue turned out to be………a loose primer pocket………..AND you now say it “makes sense”. I think you owe an apology to 4n210.I'll buy this explanation as it makes sense.![]()
What do you think happens with the primer through the firing process?He also thinks that the primer is held in through the entire firing procedure. Fireballs out the receiver on my semi say otherwise




























