Anyone know a source for smokeless data for .45-90 with heavy bullets (500grs)? I've been using XMP 5744 as it's the only data I came up with. I would like to try something else looking for a more accurate load. Any suggestions?

Got these off of a now defunked site.

http://www.trilobyte.net/djones/4570/45-90.htm

300 BARNES.

Powder Brand Powder Grs. MV Notes
2400 37.0 1935
SR 4759 35.0 2115
IMR 4895 62.0 1935 modern barrels only .
IMR 3031 64.0 2040 modern barrels only .
IMR 4198 38.0 1530
GOEX FFg 82.0 1516
GOEX Cart 85.0 1506
Pyrodex 55.0 1514

350 Hawk Jacketed
Powder Brand Powder Grs. MV Notes
XMR-2015 53.0 1810
XMR-2015 55.0 1960 modern guns ONLY

405 Jacketed
Powder Brand Powder Grs. MV Notes
2400 34.0 1795
SR 4759 32.0 1745
IMR-4198 32.0 1410 Lyman 457483 GC .
IMR-4198 53.0 1980 modern barrels.
IMR-4895 58.0 1875 modern barrels.
IMR-3031 60.0 1950 modern barrels.
RL 7 45.0 1830

Here ya go

i load 27gr with 540gr bullet out of my rolling block and shoot well, also shoot a 510gr cast with same charge out of the this rifle. they say it is not case sensitive but it is, you want to keep powder on primer when shooting.