According to my Midway LoadMAP book, top velocities are:
Hornady 230 RN Lead - 7.6 grains UNIQUE = 991 fps @ 21,000 psi
Midway 230 RN Lead - 7.1 grains UNIQUE = 990 fps @ 21,000 psi
Speer 230 RN Lead - 7.5 grains UNIQUE = 982 fps @ 21,000 psi
All are within the +P limits for 1911-type handguns...but clearly the bullet used matters A LOT! Simply substituting the Midway bullet for the Hornady bullet could make an overload.
An interesting load in the same book:
Speer 230 HP/GD - 7.4 grains UNIQUE = 964 fps @ 21,000 psi.
Compare this load to the Midway bullet load above. Those who insist that lead bullets always give lower pressures with the same load than jacketed bullets do, had best forget that tired mantra.
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