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Old 02-08-2011, 01:00 PM
palmetto99 palmetto99 is offline
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Default Small Pistol Primers vs. Magnum Small Pistol Primers

I usually use CCI #500 small pistol primers for my 9mm loads (4.3 TiteGroup under a 115 grn FMJ). I have some CCI #550 magnum small pistol primers in my stash. What is the difference between the #500 and #550? Should I adjust my load? Thanks folks.
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Old 02-08-2011, 01:45 PM
OKFC05 OKFC05 is offline
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115 GR. LRN Hodgdon Titegroup .356" 1.100" 3.9 1075 25,800 CUP 4.3 1151 30,500 CUP
115 GR. SPR GDHP Hodgdon Titegroup .355" 1.125" 4.5 1135 29,500 CUP 4.8 1158 30,500 CUP

You're loading below the recommended starting load for a jacketed bullet.
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Old 02-08-2011, 02:12 PM
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Dnotarianni Dnotarianni is offline
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Been there done that. All I ever found was about 30-40 FPS faster with Mag primers over my chrony
Dave
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Old 02-09-2011, 03:48 AM
ArchAngelCD ArchAngelCD is offline
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Your load is so light there's no reason to reduce the charge when using a Magnum primer.
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Old 02-09-2011, 05:42 AM
Missionary Missionary is offline
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Small Pistol Primers vs. Magnum Small Pistol Primers Small Pistol Primers vs. Magnum Small Pistol Primers Small Pistol Primers vs. Magnum Small Pistol Primers Small Pistol Primers vs. Magnum Small Pistol Primers Small Pistol Primers vs. Magnum Small Pistol Primers  
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Good morning
For plinking and below max loads of slow powders a Mag primer seldom makes much of a difference. Benchrest shooters and "Machine" shooters might see a slight accuracy difference.
If you have no intention of loading 296 or H110 or similar powders in 357 than use them up.
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Old 02-10-2011, 10:03 PM
palmetto99 palmetto99 is offline
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Thanks guys.
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