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Discussion in 'General Firearms Discussion' started by tomtull, Sep 13, 2014.
These shells got this way while safely cycling rounds in my 4595,any info would be appreciated.
"Need more input"
Sorry forgot the pic.
I'll try again
I see some scratches. Whoopdie-damn-doo. So what's your concern?
They bulge a little, like they were compressed, right below the slug,
Looks like bullet set back to me. I would pull those.
The left 2 bullets look like they are pushed in a little as greg_r said. I would pull them also.
Look close guys. The scratches look like rifling. There appears to be something seriously wrong here.
Holy cow, guys.
The bulging looks like reloads that were crimped a bit tight, maybe some commercial ammo is crimped like that?
Setback? On that crimp? I don't see it. Can you measure the things, instead of letting us guess?
The scratches on the shell case look like what happens when the inner edge of the mag isn't smooth, and the bullet drags across it as it leaves the mag. It's NOT rifling, it's a straight line scribed into a rising surface, as the bullet rises up toward the chamber.
Why does everyone automatically go worst case scenario?
Look at the case mouth as compared to the olgive. Micrometers will confirm it but I see setback in at least 2 of those. As the scratches, no I don't see rifling marks either.
Maybe. Or you see the effect of perspective due to the camera being at an angle.
But I agree, a mic would settle things.
1. Not likely. Crimp is only at the case mouth.
Don't know what is meant by "setback". Maybe, how deep the bullet is seated into the case? Pics look OK to me.
.45ACP headspaces on the case mouth. Drop one into the chamber by hand, see if it slides right in all the way.
Thanks for the input guys, I don't have a mic.or any really accurate way to measure them, but with a tape, the normal cartridge is about an inch and a quarter, the ones in question are about a sixteenth smaller.
Setback is when the bullet is pushed deeper into the case. It causes an increase in chamber pressure. Can cause a KA-BOOM when all you want is a Bang.
It's a known cause of many of the 40 s&w issues.
Definitely don't shoot them. They will cause increased chamber pressures.
Seems like I'd be smart not to shoot them, thanks for the info everybody. ;-]
My 9mm Aquila 145 grain look just like that !! , bought (2) 50 rd boxes of these and not sure about them
Are they Winchester White Box by any chance?