Page 1 of 1

Factory or Taper Crimp for .367 Bullet?

Posted: March 15th, 2017, 2:28 pm
by themoose
The title pretty much says it all..I'm currently waiting on a .367 sizing die to be finnished at a local shop and for some newly poured bullets to age before using the sizing die. I'm planning on sizing 100gr bullets to .367 to fit my P64 that slugged @ .366. I will be reloading on a Diillon 550b. I currently have reloaded for store-bought bullets @ .365 with the seating/crimping die backed off to seat only then use a Lee Factory Crimp die to put the finnish crimp on... was concerned that the larger diameter .367 would be sized below the .367 desired if I used the Factory Crimp die... anyone have any experience with this?

The Moose

Re: Factory or Taper Crimp for .367 Bullet?

Posted: March 15th, 2017, 3:49 pm
by Ketchman
Why .367?

Re: Factory or Taper Crimp for .367 Bullet?

Posted: March 15th, 2017, 4:40 pm
by themoose
I normally try to go .001 over slugged barrel diameters

Re: Factory or Taper Crimp for .367 Bullet?

Posted: March 15th, 2017, 6:19 pm
by Ketchman
why?

Re: Factory or Taper Crimp for .367 Bullet?

Posted: March 15th, 2017, 8:36 pm
by themoose
Ketchman, Are you just messing with me or do you have a point you want to make? From what I have read you want your sized bullet about .001" over the bore size to have an ideal set up so that you will minimize leading... I know that we are talking about a lower velocity pistol round, but the same principals would apply, wouldn't they? Are you sure you don't live in "Whyoming"?

Re: Factory or Taper Crimp for .367 Bullet?

Posted: March 15th, 2017, 8:48 pm
by Ketchman
No sir, I live in Wy-oming (funny though). I was under the impression that you sized TO the bore size as firing caused a lead slug to expand ever so slightly INTO the groove size. BUT, that being said I do not reload currently :( so I am nooo expert. The only time I can remember reading about starting with oversize bullets was on a weapon the had extra deep rifling. And I have not heard of one of these little monsters having that issue. Amd I thought you would explain fully the first time. Sorry. :|

Re: Factory or Taper Crimp for .367 Bullet?

Posted: March 15th, 2017, 9:45 pm
by themoose
For black powder using soft lead, you want the bullet to actually be a little under bore size as the soft lead obturates(expands) when fired... but in most smokeless powder loads there is little to no obturation so you want the overbore situation to seal the bore to prevent the gases from burning thru the base/edge of the bullet...