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Old 03-20-2013, 10:22 PM
ricemanff ricemanff is offline
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Default I ran out of SPP thinking about SMP for a 38spl

Has anyone tried using small pistol magnum primers with a 38spl? I usually just follow the loading manual which calls for spp, but with the shortage of spp the game has changed. Just want to check if anyone has loaded with these.
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Old 03-20-2013, 10:49 PM
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Yes, used Small Rifle too. No problem for a medium load.
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Old 03-21-2013, 5:51 AM
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If you use smpp start at the low end of the load data once again. Magnum primers are hotter than the regular primers.
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Old 03-21-2013, 7:45 AM
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Yes, but not with anything near the high end of the load. Pressure is a bit higher.
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Old 03-21-2013, 8:30 AM
Bill Steele Bill Steele is offline
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There is a difference in pressure created by magnum primers, but it is pretty small.

When I was loading nuclear 10mm, the difference when I started getting head expansion beyond acceptable limits, smilies, blown primers, etc. was one or two tenths of a grain powder difference with the mag primers, so the added pressure of magnum primers is not a great deal.

How much powder you put in the case is far more important, especially when you are loading faster powders.
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Old 03-21-2013, 8:36 AM
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I would use the lower load data for the reasons mentioned above
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Old 03-21-2013, 9:05 AM
ricemanff ricemanff is offline
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Thanks for the info. I was lucky enough to pick up some smal pistol primers this morning.
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Old 03-21-2013, 9:28 AM
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I have used CCI #41's, and SRP in 9mm, and even SPP in my AR loads with very good results. I don't usually do this, but I loaded a batch of each, and noticed no overpressure signs, but "as I recall" #41's seem to give about +50-75FPS with a 9mm and 5.2gr of Unique with 115gr plated.
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Last edited by the86d; 03-21-2013 at 9:40 AM..
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