imr trail boss® reduced loads for rifle and pistol As noted in the powder description section, Trail Boss was designed primarily for reduced loads using lead bullets in pistol cartridges. However, Trail Boss offers superb versatility in rifle cartridges producing reduced loads using lead or jacketed bullets. Jan 01, 2006 · If we think about the.45 Colt and typical black-powder loads of 35 to 40 grains and then compare Trail Boss charges of a maximum of 8.5 grain with those wussy 160 grain bullets the cowboys love you can see how not true the "substitute" label would be. Perhaps the best explanation is found in the newest IMR Reloader's Guide.
Hodgdon Reloader Manual 2002.pdf. in every cartridge where it is listed in our data. It had its origin in the 30-06 as a military powder and was the first powder Bruce Hodgdon sold to the loading public.