Originally Posted by AKGuide
Thanks a lot Lefty I haveW760, H414, and H4831 for powders. With the way things are up here in Alaska powder is a hard comodody to come by. These are the powders I believe will work. The others I have may be too fast or too slow; BL-(C)2, W748, R25, Retumbo, H50BMG. Thanks again.
416 ruger data...
they show 760 at 76.2 start and 80.8 top
for 748 they show 66.5 start and 75.3 top at the same speeds
the vel's go from 2000 to 2250 fps but they are in a 20" bbl. so you will likely show higher with a longer pipe. 760 and h414 are the same powder (according to Hodgdon) so either 760 or h414 would work with this.
I was thinking you had a ruger variant, not rum-- sorry... I re-read and saw rum.... in any case you have ideas on where to start
for 416 Dakota data they show only h4831 of the powders you have and they go from 80.7 start to 107.2 top with speeds from 2100 to 2600 fps.