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Old January 12, 2013, 01:51 PM   #1
Join Date: January 15, 2011
Location: SW Iowa
Posts: 31
45 colt primers?

Could only get CCI, 350, magnum primers. How much should I reduce the powder in medium 45 colt loads to account for the magnum primers? Mine is Lipseys 45lc/acp so is medium frame and don't plan to load heavy loads anyway. Am using 255 SWC and Unique powder. thx triker
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Old January 12, 2013, 02:04 PM   #2
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Join Date: May 31, 2004
Location: Minnesota
Posts: 2,049
I would go back to the recommended minimum charge and work up from there.
CCI 350's are very hot. Recently there was a test in Handloader magazine where the CCI 350 raised pressure in the 45 Colt over 13,000 psi compared to a Win LP primer.
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Old January 12, 2013, 02:05 PM   #3
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Join Date: February 12, 2009
Location: Butte, MT
Posts: 2,008
Unique is not primer sensitive. Either WLP, CCI-300, CCI-350 will work just fine.

Test results:

8.5g Unique, 255g SWC, CCI-300, 977fps, 17 SD, 56 ES, 15 shots
8.5g Unique, 255g SWC, CCI-350, 985fps, 21 SD, 82 ES, 15 shots

I did these tests on a few powders because I ran into the same problem you did the last time around we have primer supply problems .
A clinger. When guns are outlawed, only outlaws will have guns. Single Action .45 Colt (Sometimes improperly referred to by its alias as the .45 'Long' Colt or .45LC). Don't leave home without it. Ok.... the .44Spec is growing on me ... but the .45 Colt is still king.
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