RCBS Powder bushings are identified by numbers that correspond to the size of their inside
diameter. (For instance, the inside diameter of the #456 bushing is .456 inches.) Bushings
for powder charges in half grain increments.
Charges By Powder: Accurate Nitro 100 19 Grains, DuPont PB 20 Grains, DuPont SR 4756 22 Grains, DuPont 4227 31 Grains, Alliant Green Dot 17 Grains, Alliant Unique 21 Grains, Alliant Blue Dot 26 Grains, Hodgdon International 19 Grains, Hodgdon Longshot 30 Grains, and Winchester 540 36 Grains
NOTE:All charges listed are an average of several loads weighed following the complete reloading cycle. Powders used in establishing these loads were from ballistic samples supplied by the manufacturer or sealed tins of recent manufacture. Charges may vary slightly due to operators technique and/or powder variables. Always check actual charge weight against recommended charges and adjust bushing size as necessary.