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Lots of noise about velocity and pressure in the 45. 1100 fps with a 185 bullet in a 5" barrel is no big deal, and several powders will do that and exceed that with +P pressure.
Pressure: the 45 Auto max pressure is 21,000 psi. The +P max is 23,000 psi. The 45 Proof load minimum is 31,000 psi. A big number, yes, but the standard pressure limit max for the 45 Super is 28,000 psi, the 450 SMC max is 32,000 psi, and the 460 Rowland is 40,000 psi.
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