Group B dies


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AMBASSADOR
November 9, 2008, 04:42 PM
When loading for a 357mag which crimp is prefered (better or not)roll crimp or tapered crimp.This will be for a revolver application.

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Walkalong
November 9, 2008, 06:01 PM
Roll crimp any jacketed bullet with a cannelure. Taper crimp most plated bullets. Roll crimp lead bullets with a crimp groove.

What bullet?

rcmodel
November 9, 2008, 06:41 PM
+1

Roll crimp is for revolvers.

Taper crimp is for auto pistols.

AMBASSADOR
November 10, 2008, 03:17 PM
R.C.B.S./Redding/LYMAN,Which die to buy?I am looking for carbide.

Hairballusmaximus
November 11, 2008, 04:05 AM
I like RCBS. I have not used any other brand though. Probably partial to RCBS since I live an hour away from them.

I know nothing about Redding dies but I have heard that RCBS is the westcoast and east coast is Lyman and that they are of same quality.

I have loaded over 35,000 38/357 rounds on my carbide RCBS dies and still going strong.

Walkalong is correct. Roll/Taper crimp does not always mean revolver or auto pistol. Not all bullets have a crimp groove or cannelure. If a crimp is necessary and a groove/cannelure is not present a roll crimp will deform the jacket or cut and shave lead off. These bullets require a taper crimp when a crimp is necessary, which it is in this case.

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