Looking thru Hornady manual #9 and Speer#14 I see quite a few loads where both use PowerPistol and lead boolits...Hornady loads are for their Dead Soft Swaged offerings. Speer loads are listed using mostly RCBS mold listings...lf Hornady and Speer are comfortable using Power Pistol, then so am l... I don't know more than they do ... How bout Y'all ??