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a load data to duplicate the .38 Special Treassury load with the Sierra 110 Gr. JHC bullet and get some 1300 fps? At this moment I have Blue Dot powder and CCI 550 primers. The gun is a .357 M. 4" barrel.
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12 grains of Blue Dot will get you close. (in .38 Special brass) 9.3 grains of Power Pistol is better; same velocity but lower pressure and more complete combustion. Both are over current SAAMI specs for .38 Special +P, but not much over.