Speer #9 for 45 Colt has 250 gr lead SWC as the heaviest bullet with AL7 11.0 gr for 879 fps to 11.5 gr max for 919 fps.
Speer #9 for 44 Mag has 240 gr Speer Magnum SP with AL7 14.0 gr at 1213 fps to 15.0 gr max for 1294 fps. Also for 44 Mag with 240 gr Speer SP (a jacketed Keith/SWC) AL7 13.5 gr for 1238 fps to 14.5 gr max at 1330 fps.
Reprint of ALCAN pistol charge table for 44 Mag lists 240 gr Half-jacket AL7 max 16.0 gr at 1465 fps and 250 gr cast with AL7 max 15.5 gr at 1460 fps.
No pressure data with these sources.