I no longer load shotshells and still have a few pounds of Nobel Magnum 6 kicking around, but don't have an old Nobel loading manual, so I thought I would ask here about loads, especially for cast bullets, for .298 Minex (80 gr. RNFPPB), .300 Rook (80 gr. RNPB), .30 W.C.F. (170 gr. RNFPPB), .303 British (~206 gr. BRTORNFPGC), .32-20 (100 gr. RNFPPB) & .38 Special (158 gr. RNPB).
I have always heard the burn rate was similar to Herco / W540. If anyone can confirm this, I would appreciate it.
BTW, the powder has always been stored in a cool, temperature controlled, 55% RH dark area and does not appear to be decomposing.
I have been using 2.4 grains (.3cc) in my .300 Rook (78 gr. RNPB), but it shows very mild pressure, with a lot of vertical, as well as 5.5 grains (.7cc) in my .30 W.C.F. carbine behind a 173 grain RNFPGC (Lyman 31141), again very mild loads with some vertical.
Thanks for the bandwidth!