When I reload cast bullets for my Beretta it actually crimson the end of the case when I reload the jackets bullets the case stays the same. Any suggestions?
9mm taper crimp
- Thread starter jdavis3245
- Start date
M
milo 2.0
Guest
Do you have to adjust the die to switch bullets. If you have to back the die out to seat one of them, you've probably backed out of the crimp feature also.
I guess I'm saying, only the seater stem should be adjusted if you have the crimp set, it doesn't change much on pistol cases.
I guess I'm saying, only the seater stem should be adjusted if you have the crimp set, it doesn't change much on pistol cases.
To switch from bullets I just adjust the stem. Could it be just from not having a groove for the case to crimp into?
Yeah, what Milo said. I had to adjust my dies to give a touch of crimp on the 9mm, 40 S&W and 45ACP, because of feeding issues. I thought crimping was for revolvers, so I wasn't doing the others, and some guns I had weren't feeding right. A guy at the range told me how to adjust the dies for just a touch of crimp, and the feed issues vanished. I can't see it, and I can barely feel it, but an un-crimped round almost feels "sharp" at the edge of the case where a crimped one feels a little smoother there, although there is still a marked diameter difference from the bullet to the shell. Go by feel, and be sure they chamber well.
I was under the impression that the crimp was just to remove whatever bell you put in the brass before seating your bullet.
The way I do it now is to store a factory round in the dies with the same bullet I intend to load. I have the Hornady dies with seperate adjustment for die/crimp/stem. After getting the depth of the die right, I just screw the crimp down on the factory round until it gives resistance and same for the stem. It's given me good result so far.
The first time I did it, I screwed it up, overcrimped and saw pressure signs at minimum loads.
You would probably have to experiment and have a different reference for each bullet you load though. I see differences between between 115gr and 124gr 9mm rounds. I sit them to the same OAL and put more of a crimp for the 115gr bullets.
The way I do it now is to store a factory round in the dies with the same bullet I intend to load. I have the Hornady dies with seperate adjustment for die/crimp/stem. After getting the depth of the die right, I just screw the crimp down on the factory round until it gives resistance and same for the stem. It's given me good result so far.
The first time I did it, I screwed it up, overcrimped and saw pressure signs at minimum loads.
You would probably have to experiment and have a different reference for each bullet you load though. I see differences between between 115gr and 124gr 9mm rounds. I sit them to the same OAL and put more of a crimp for the 115gr bullets.
jdavis,
For a jacketed bullet, the crimp should decrease the diameter of the round by 0.001 to 0.002 at the mouth compared to the rest of the seated bullet diameter. I don't remember what manual recommends this, but I believe it's the Sierra manual. It works for me.
HTH,
DocB
For a jacketed bullet, the crimp should decrease the diameter of the round by 0.001 to 0.002 at the mouth compared to the rest of the seated bullet diameter. I don't remember what manual recommends this, but I believe it's the Sierra manual. It works for me.
HTH,
DocB
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