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Old May 28, 2013, 12:36 AM   #1
BrokenBottles
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Join Date: September 16, 2010
Location: The worst Lancaster in the U.S.
Posts: 119
.38spc loaded to .357mag levels

This is hard to explain when I'm typing it out so bear with me.
Is it unsafe to load .38 Specials to .357MAG powder levels using IMR 700-X?
Hodgdon.com has a generic 125g cast LRNFP with 700-X for the .38spc
Quote:
125 GR. CAST LRNFP IMR 700-X .358" 1.445" 3.7 982 14,500 PSI 4.2 1076 16,200 PSI
They also have 125g MEI CAST LRNFP with 700-X for the .357MAG
Quote:
125 GR. MEI CAST LRNFP IMR 700-X .358" 1.580" 4.0 1069 13,500 PSI 5.5 1311 21,800 PSI
Those formulas are for pistol and I'm actually shooting them out of a 19" leveraction rifle, hence the slow powder choice

I've worked up a load for .357 that was great shooting and didn't show any pressure signs and was very accurate. 5.2grains with a COL of ~1.575(it was seated at the cannelure).
Would it be unsafe to work up a load for 38 Specials that went above the published max since there would still be a lot of empty space above the powder and it's in a rifle that can handle .357 MAG pressures?
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Last edited by BrokenBottles; May 28, 2013 at 12:36 AM. Reason: title issues
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