Taper crimp and bulge on .45 acp

[nulfisin]

This is a follow-up to an earlier question. After resizing my cases, the dimensions are fine. They fit into my barrel and match the factory dimensions. However, after seating the bullet, I can't make the cases fit -- too thick. The differences aren't visible to the naked eye, so I'm not posting pictures at this time. Any thoughts on what I'm doing wrong?

 

[iblong]

Are you crimping after seating what is your crimp measurement , should be about .469 to .470 is all the bell at the case mouth removed.

 

[nulfisin]

Taper crimp

The measurement is .471. I'm really just crimping by running it through the bullet seating die, which is what the RCBS instructions say to do. There must be a better way?? Thanks.

 

[rcmodel]

The RCBS bullet seating die is also the taper crimp die.

Screw it in further and the .471" will become .470", .469", or whatever you determine it needs to be to chamber.

It's just a matter of adjusting the die correctly.

rc

 

[Noveldoc]

Agree. I had seating problems on a batch. Screwed the Lee die in about 1/2 turn and readjusted the bullet seater. Fed just fine with increased crimp.

I suspect they may have had a tiny bit of residual bell.

Tom

 

[Drail]

If you flare more than necessary you will have to crimp more to remove the flare. See if you can use a little less flare.