Factory or Taper Crimp for .367 Bullet?

Discussion on reloading the 9x18 and any other cartridge
Post Reply
themoose
Junior member
Posts: 11
Joined: March 1st, 2017, 9:55 am

Factory or Taper Crimp for .367 Bullet?

Post by themoose » March 15th, 2017, 2:28 pm

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

Ketchman
Veteran member
Veteran member
Posts: 942
Joined: December 24th, 2011, 4:36 pm
Location: Wyoming, USA

Re: Factory or Taper Crimp for .367 Bullet?

Post by Ketchman » March 15th, 2017, 3:49 pm

Why .367?
Inspiration: The momentary cessation of stupidity.

"As in all life, the odds are 6 to 5 against"--- Ketchman

"The past is a foreign country. They do things differently there."
Jeff Cooper

themoose
Junior member
Posts: 11
Joined: March 1st, 2017, 9:55 am

Re: Factory or Taper Crimp for .367 Bullet?

Post by themoose » March 15th, 2017, 4:40 pm

I normally try to go .001 over slugged barrel diameters

Ketchman
Veteran member
Veteran member
Posts: 942
Joined: December 24th, 2011, 4:36 pm
Location: Wyoming, USA

Re: Factory or Taper Crimp for .367 Bullet?

Post by Ketchman » March 15th, 2017, 6:19 pm

why?
Inspiration: The momentary cessation of stupidity.

"As in all life, the odds are 6 to 5 against"--- Ketchman

"The past is a foreign country. They do things differently there."
Jeff Cooper

themoose
Junior member
Posts: 11
Joined: March 1st, 2017, 9:55 am

Re: Factory or Taper Crimp for .367 Bullet?

Post by themoose » March 15th, 2017, 8:36 pm

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"?

Ketchman
Veteran member
Veteran member
Posts: 942
Joined: December 24th, 2011, 4:36 pm
Location: Wyoming, USA

Re: Factory or Taper Crimp for .367 Bullet?

Post by Ketchman » March 15th, 2017, 8:48 pm

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. :|
Inspiration: The momentary cessation of stupidity.

"As in all life, the odds are 6 to 5 against"--- Ketchman

"The past is a foreign country. They do things differently there."
Jeff Cooper

themoose
Junior member
Posts: 11
Joined: March 1st, 2017, 9:55 am

Re: Factory or Taper Crimp for .367 Bullet?

Post by themoose » March 15th, 2017, 9:45 pm

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...

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest