Bullseye-L Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.

38 wc crimp ?

+2
USSR
rebs
6 posters

Go down

38 wc crimp ? Empty 38 wc crimp ?

Post by rebs 7/17/2017, 4:21 pm

I have read where some guys crimp over the end of the wc. when you do that doesn't it seem the wc could slide back in the case ? Could anyone post a pic of that crimp ?
I have loaded some flush which still gives some of the wc for the crimp to bite into and I have loade some with about 1/8 inch of wc sticking out of the case. Is there any advantage as to how the wc is crimped ?

rebs

Posts : 273
Join date : 2015-02-11

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by USSR 7/17/2017, 4:46 pm

I taper crimp mine with an OAL of 1.18" (just a bit outside the case).   Case tension keeps them from sliding back in the case, not the crimp, unless you roll crimp into the bullet or bullet's crimp groove.   For the guys with S&W Model 52's, how you crimp is important.   For guys like me with a Model 14, not so much.

Don
USSR
USSR

Posts : 352
Join date : 2017-07-14
Age : 73
Location : Finger Lakes Region of NY

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by james r chapman 7/17/2017, 5:40 pm

Like this.
Precision Delta
Attachments
38 wc crimp ? Attachment
IMG_20170717_183930.jpg You don't have permission to download attachments.(16 Kb) Downloaded 14 times
james r chapman
james r chapman
Admin

Posts : 6059
Join date : 2012-01-31
Age : 75
Location : HELL, Michigan

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by LenV 7/17/2017, 7:34 pm

I use a roll crimp like store bought. The bullet never moves back in the case. Remember these are mouse loads and don't have the recoil of a .44 mag. I do leave a tiny bit of the bullet past the end of the roll. Also like store bought.

38 wc crimp ? Dscf0810
LenV
LenV

Posts : 4663
Join date : 2014-01-24
Age : 74
Location : Oregon

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by james r chapman 7/17/2017, 8:46 pm

With the .38 special and 148 gr wadcutters it's a don't waste your time reinventing the wheel.

After the 10 Commandments, GOD etched in stone..

2.7 WST 148 gr HBWC flush mounted, roll crimp, and Federal primers...
james r chapman
james r chapman
Admin

Posts : 6059
Join date : 2012-01-31
Age : 75
Location : HELL, Michigan

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by rebs 7/18/2017, 6:11 am

Thank you for the replies. I can see now I am crimping too much.

rebs

Posts : 273
Join date : 2015-02-11

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by BE Mike 7/18/2017, 7:48 am

I taper crimp only. As a matter of fact Winchester used to taper crimp only. The other major manufacturers (Remington and Federal) used to roll crimp. I always considered the roll crimp to aid in reloading revolvers. That would be important for PPC shooters.
BE Mike
BE Mike

Posts : 2454
Join date : 2011-07-29
Location : Indiana

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by rebs 7/18/2017, 4:17 pm

will too much crimp affect the accuracy of 158 gr lswc's ?

rebs

Posts : 273
Join date : 2015-02-11

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by BE Mike 7/18/2017, 5:10 pm

rebs wrote:will too much crimp affect the accuracy of 158 gr lswc's ?
I can't say. A lot depends upon the type of crimp and maybe even the manufacturer. If it has a crimping groove, you should be able to put a medium roll crimp into that groove without distorting the bullet and be good to go. I did some accuracy tests with .45 ACP. Accuracy started to deteriorate after the crimp got very heavy. I stay with a .470" crimp for the .45 ACP. That being said, John Giles used to recommend, I believe a .465" crimp and others have confirmed very good accuracy with that. I think that Star dies were being used and that might be the difference.
BE Mike
BE Mike

Posts : 2454
Join date : 2011-07-29
Location : Indiana

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by LenV 7/18/2017, 8:38 pm

rebs wrote:will too much crimp affect the accuracy of 158 gr lswc's ?
Not much. They are not very accurate to start with. Cynical but true. I am still trying to work up a decent 50yd load for that bullet.

Len
LenV
LenV

Posts : 4663
Join date : 2014-01-24
Age : 74
Location : Oregon

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by noylj 7/19/2017, 3:33 am

I tried every taper and roll crimp die I had and found that NONE gave me the accuracy of using a Redding Profile Crimp Die. Never found crimp to effect accuracy before, but it does for 148gn wadcutters in MY guns at least.
You want just enough roll crimp that the case mouth edge doesn't hang-up on the cylinder or feed ramp, and not more.
For 158gn SWCs, I always set the COL such that the case mouth was just below the top of the crimp groove in the bullet and then, in a separate step, I roll crimped into the groove. I found not real effect from just slightly rolled completely into the groove to just barely NOT contacting the bullet with the case mouth. More or less than that die affect accuracy.
For .38, I use as little crimp as possible.
I also found, with revolvers in .38 Spl, .357 Mag, and .44 Rem Mag and in my M52s semi-autos, that trimming the cases has no effect on accuracy and, in general, the untrimmed or mixed head stamp rounds gave slightly smaller groups and Std. Dev.--but a Student t-test still showed that there was no statistical significance to it.

noylj

Posts : 417
Join date : 2012-03-09
Age : 74
Location : SW USA

Back to top Go down

38 wc crimp ? Empty Re: 38 wc crimp ?

Post by Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum