Emailed and they sent back a reply with data for their heavies. figured it would be a good starting point for anyone looking for this hard to find info.
For the 35 Whelan 275 gr PP SN;
H4895 48 to 53 gr 2088 to 2320 fps
Varget 50 to 55 gr 2142 to 2305 fps
Reloder 15 52 to 57 gr 2145 to 2345 fps
Vihtavouri N140 51 to 55 gr 2140 to 2310 fps
For 310 gr RN SN;
Varget 46 to 52 gr 1868 to 2135 fps
H4350 51 to 59 gr 1880 to 2200 fps
Reloder 15 46 to 53 gr 1897 to 2140 fps
Reloder 17 51 to 58 gr 1890 to 2215 fps
N140 45 to 52 gr 1880 to 2150 fps
N540 48.5 to 53 gr 2020 to 2200 fps
For the 35 Whelan 275 gr PP SN;
H4895 48 to 53 gr 2088 to 2320 fps
Varget 50 to 55 gr 2142 to 2305 fps
Reloder 15 52 to 57 gr 2145 to 2345 fps
Vihtavouri N140 51 to 55 gr 2140 to 2310 fps
For 310 gr RN SN;
Varget 46 to 52 gr 1868 to 2135 fps
H4350 51 to 59 gr 1880 to 2200 fps
Reloder 15 46 to 53 gr 1897 to 2140 fps
Reloder 17 51 to 58 gr 1890 to 2215 fps
N140 45 to 52 gr 1880 to 2150 fps
N540 48.5 to 53 gr 2020 to 2200 fps