Jumping the Crimp
- Thread starter Fredo
- Start date
I'd try other brands of ammo. Perhaps with lighter bullet weights, if possible, which might be less inclined to give trouble.
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Pictures don't always tell an accurate story. I do not see much of a crimp. And the crimp cannelure doesn't look very deep to start with.
Again, maybe the photo is fooling me.. Either way, maybe try a different bullet with a potentially deeper cannelure, for the crimp to actually get a hold of something.
And if these are not reloads, then yes, try a different brand. I've never had a factory .357 cartridge jump crimp. But the LCR is extremely light, and punishing. It will find a weakness in both the ammunition and the shooter!
And Welcome!
.
Again, maybe the photo is fooling me.. Either way, maybe try a different bullet with a potentially deeper cannelure, for the crimp to actually get a hold of something.
And if these are not reloads, then yes, try a different brand. I've never had a factory .357 cartridge jump crimp. But the LCR is extremely light, and punishing. It will find a weakness in both the ammunition and the shooter!
And Welcome!
.
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jstanfield103
Blackhawk
As I stated on your other post on another site, I would buy another brand. Looks like no crimp at all on that brand and just maybe it missed a step at the factory.
I don't see a crimp, and the cannelure where it should be is too far out to be of any use.
If you have a large supply of these a friend who can re-seat and crimp them for you will work, but I'd give a call to Sig about them.
If you have a large supply of these a friend who can re-seat and crimp them for you will work, but I'd give a call to Sig about them.
Definitely crap ammo. Maybe if you contact them they might correct the situation and hook you up with some decent ammo. Sig isn't exactly known for Revolvers.
contender
Ruger Guru
Welcome to the Forum Fredo!!
You have been given excellent advice above.
Bullets jumping the crimp are not uncommon in certain situations. Light guns,, combined with heavy recoiling ammo can easily cause this.
In reloading,,, when we are making our own heavy recoiling ammo, we always try to make sure we have a good crimp to help prevent this.
But I've also seen it happen to lighter ammo in brass that has been loaded several times,, where the neck tension isn't very good. More often in a semi-auto rimless such as the .9mm because you can't roll crimp the case. The case headspaces on the mouth,, not the rim. In fact,, in my .9mm revolver,,in USPSA competition,, once I eject a moon clip with live rounds,, I never re-use them in a match. And I also take them & run them back through my press & re-seat the bullets & re-do the taper crimp. BECAUSE I have bullets creeping forward some.
So, as noted above,, switch ammo, and just to be cautious,, shoot one or two, checking the remaining ammo for bullet jump to prevent a round from jamming up the gun again.
You have been given excellent advice above.
Bullets jumping the crimp are not uncommon in certain situations. Light guns,, combined with heavy recoiling ammo can easily cause this.
In reloading,,, when we are making our own heavy recoiling ammo, we always try to make sure we have a good crimp to help prevent this.
But I've also seen it happen to lighter ammo in brass that has been loaded several times,, where the neck tension isn't very good. More often in a semi-auto rimless such as the .9mm because you can't roll crimp the case. The case headspaces on the mouth,, not the rim. In fact,, in my .9mm revolver,,in USPSA competition,, once I eject a moon clip with live rounds,, I never re-use them in a match. And I also take them & run them back through my press & re-seat the bullets & re-do the taper crimp. BECAUSE I have bullets creeping forward some.
So, as noted above,, switch ammo, and just to be cautious,, shoot one or two, checking the remaining ammo for bullet jump to prevent a round from jamming up the gun again.
Like the others said, I don’t even see a crimp. I would not fire the rest of the box without crimping them. Maybe contact the manufacturer and tell them (suspect they skipped the step and locked up your gun),… maybe they’ll take care of you in some way.
