Let's see your best examples of over pressure signs. I found this one recently in brass picked up at a match. I didn't fire it. Most likely someone had an overcharge or mixed in a 9mm major round in a gun sprung for 9mm minor. This one was pretty close to a kaboom.
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Over Pressure signs.
- Thread starter gyppo
- Start date
What happens when you fire a 5.56 in a 7.52x39 AR?
Not me……
Not me……
Here’s mine, Remington 357mag brass, 125gr Everglades FMJ’s over a healthy charge of AA#9. Had 250 loaded, on the second to last cylinder had a shot that sounded different and this was what I found. Shot the last 6 with no problem. First reload on this brass, and the charge wasn’t hot enough to do that, just a weak piece of brass I think. I still have it, I keep all of that kind of stuff
That’s good to know. I’ve changed over to a roll crimp die since.
I've blown primers, cracked necks broke the bolt twice. When you get on the edge and keep pushing something is going to give. Seating bullets to touch, using loads developed in the winter during the summer, trying magnum primers without backing off the powder and just hot rodding are a few of mistakes I've made.
38.8 gr of Benchmark and 139 gr Hornady GMXs caused a few cratered primers for me. I pulled the rest of the bullets and went with RE15.
