Need loads for 45/70 with 535 gr cast and VARGET <---HELP

[GUNSLINGER1886]

I have recently acquired a new Lyman mold for my 45/70. It is a 535 gr round nose. I have already cast about 100 of these puppys with great success. The only problem is that I am lacking loading information. I have the Lyman 49th edition and a few other manuals, but can't seem to find and load info for a 535 gr cast in 45/70. I have a H & R Buffalo Classic that I plan on firing these from. I already have Varget and some Trailboss. Im guessing the Trailboss will be insufficient with such a heavy boolit, but I may be wrong just guessing. Has anybody ever fired heavy boolits with Varget?? If so I would def be interested in your experiences. Please share!

[44MAG#1]

I have the 49th manual and Varget data is in it. Both Trapdoor and Ruger loads. Right there for 535 gr bullets.

[blackpowder man]

I tried Varget with the Lee 500 grain. Seems like 38 grains did pretty good to duplicate Bp velocity.

[bobthenailer]

The best smokless powder load i came up for my 45/70 with a saeco 540 gr bullet was 50grs of 4831, super accurate from my rifle better than moa out to at least 300 yards , thats the fartherest i tested it with a 6x20 leupold scope
Varget worked but to get accuracy the velocity was over 1,400 fps and to much recoil and not nearly as good accuracy as 50grs of 4831 powder.@1300 fps

[CPL Lou]

The best smokless powder load i came up for my 45/70 with a saeco 540 gr bullet was 50grs of 4831, super accurate from my rifle better than moa out to at least 300 yards , thats the fartherest i tested it with a 6x20 leupold scope
Varget worked but to get accuracy the velocity was over 1,400 fps and to much recoil and not nearly as good accuracy as 50grs of 4831 powder.@1300 fps

Which 4831, IMR or H4831 ?

CPL Lou

[bobthenailer]

I used H4831 but from my experinces in other rifles both will work excellent you just have to jiggle the load a little to hit the sweet spot