But But But But But….full stop, no “buts”, nothing follows.
You aren’t blanking primers so drive on.
But But But But But….full stop, no “buts”, nothing follows.
You aren’t blanking primers so drive on.
It is too large, will try to get a photo of it tonight.That's what I was going to say.
My first though was it was the reloads but we tried a few factory loads and got the same results.I wouldn’t worry about it. I have a Beretta 92FS that leaves that kind of mark on the primer no matter what make of ammo used, factory or reloads.
It is doing the same thing with all factory ammo we tried.Firing pin spring 22 to 24 pounds? http://benchrest.com/showthread.php?102626-Kelbly-Actions-What-not-to-do-to-improve-accuracy
If reloading with CCI 400 primers, try a different primer. Magnum works.
- Factory Standard..........: 24 Lb.
Odd part about it is, we were shooting some rifles and my son noticed the cratering and we looked at all my fireformed cases about -20 or so- for the rifle.Don’t sweat these. You have an oversized pin bore, just like millions and millions of other factory rifles. You’re not flattening primers and it doesn’t appear you’re anywhere near to a pressure which will pierce or rupture your primers - sometimes that crater can separate and stack into your firing pin bore, then eventually jam the striker assy. That’s just an artifact of factory R700’s, kinda like driving down a gravel road and then realizing your car got dusty… just a fact of life. Bush the pin if you really want, but it’s largely much ado about nuthin’ for most rifle owners.
We also thought the reload primers were the problem at first.Which small primers? CCI 400?
They will all crater if you have slop between the firing pin and hole but the CCI 400s have a higher likelihood of piercing if used in cartridges that generate over 40,000 psi. That risk is greater if you’re also cratering them, a lesson I learned…..
You aren’t blanking your primers but @Pivot Dr is.
Everyone should read this article on primers
https://www.accurateshooter.com/technical-articles/primers-and-pressure-analysis/
Compare your case capacity. The srp brass might be lower. I see cratering like that on several Remington rifles I've reloaded for. All did it with factory ammo. Mag primers aren't as bad about it.Pardon my ignorance, but what is blanking my primers? I’m running right at .0015 headspace with my rifle. It is chambered in 260 Remington improved. I have large primer brass in Lapua, Hornady, Peterson, and have formed most all other kinds of 308, 7-08, and 243 with no issue whatever. I found a deal on some Peterson 260 Remington small primer cases, that’s when my trouble began. I prefer RP 7-1/2’s so they were the first to show problems, next S&B small rifle, same thing. Moving on to WW and Federal Small rifle primers. Finally I loaded some with the CCI Mill spec small rifle primers. Same thing. I too tried a heavier firing pin spring with no change. I go back to any piece of large primer pocket brass and I’m back to normal looking fired primers. I guess until I figure out what is happening and find a remedy I’ll just keep using large primer brass and maybe use the ones not fire formed yet for something else, 243, 7-08, or 308. Seems strange to me but something repeatable is obviously going on here.
Hmmmmm?
Pardon my ignorance, but what is blanking my primers?
So do you think an oversize firing pin might be large enough to take up space and remove the slop?They will all crater if you have slop between the firing pin and hole but the CCI 400s have a higher likelihood of piercing if used in cartridges that generate over 40,000 psi. That risk is greater
Leaving the cratering aside for the moment, can you tell us what small rifle primers you are piercing?
Seems strange to me but something repeatable is obviously going on here.
Blanking = Piercing
Leaving the cratering aside for the moment, can you tell us what small rifle primers you are piercing?
If they are CCI 400 or WSR then don’t use them. The cups are too thin to use with high pressure cartridges like the 260 Rem
Why no large primers pierce but any small primers do?
Because the cups are thicker.
Also, most rifles that are designed to shoot small primers have a smaller diameter firing pin. Don’t recall the dimensional difference but I’ll bet your rifle has the larger pin