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Old September 19, 2012, 01:23 AM   #1
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Join Date: April 22, 2012
Location: Huntsville, Utah
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Got a question about Magnum vs normal primers for BP cartridge (pistol and BPCR).
I've heard several opinions and don't know what to believe.
Opinion #1:
Magnum primers result in a cleaner burn. I remember reading that 10-15 years ago, magnum primers were popular in BP cartridge reloading.
Opinion #2:
Magnum primers result in slightly higher muzzle velocity, but leave harder, baked on fouling (which is clearly a problem). I seem to remember a post referencing old reloading data which implied that hotter primers left baked on fouling and were developed in response to smokeless powder.
Any thoughts?
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Old September 19, 2012, 05:27 AM   #2
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I've used a few magnums and I didn't notice any difference between those and standard but it was just a few.
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Old September 19, 2012, 10:29 AM   #3
Fingers McGee
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Join Date: March 19, 2008
Location: High & Dry in Missouri Ozarks
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I've used standard power caps and primers in frontstuffers, single shot pistols, revolvers and BP cartridges for over 30 years at rendezvous', CAS matches and informal shooting matches. While I don't shoot long range BPCR or silhouettematches, I've never seen the need for magnum caps/primers when using real blackpowder.

Now, using that fake stuff.....................
Fingers (Show Me MO smoke) McGee - AKA Man of Many Colts - Alter ego of Diabolical Ken; SASS Regulator 28564-L-TG; Rangemaster and stage writer extraordinaire; Frontiersman, Pistoleer, NRA Endowment Life, NMLRA, SAF, CCRKBA, STORM 327, SV115; Charter member, Central Ozarks Western Shooters
Cynic: A blackguard whose faulty vision see things as they are, not as they should be. Ambrose Bierce
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