According to Speer, the “average case capacity” is 15.3 grains of water, so your brass is pretty thick - accounting for the high velocity and early pressure signs. What firearm are you using? The SAAMI max pressure for the Hornet is 49,000 psi/43,000 CUP, but Hodgdon limits their max loads to well under that. Their Lil’Gun data is just 31,600 CUP. So while your load may well exceed Hodgdon’s maximum pressure, it may be under the SAAMI maximum. FWIW, Speer’s maximum load of 13.0 grains gave 2913 fps in a 24” barrel. Different brass, different barrels, different bullets, different lots of powder.
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