How to select bushings for half-grain charges: Hornady powder bushings are identified by numbers that correspond to the size of their inside diameter. Bushings for powder charges in half-grain increments can be calculated from this chart. Simply "split the difference" between the two even-grain bushings, and select the bushing nearest the result. Example: To find the bushing for 18 1/2 grains of Hercules Red Dot powder, note that bushing #468 gives a charge of 18 grains and that bushing #480 gives 19 grains. Split the difference between 468 and 480, and the result is 474. Thus, the correct bushing for 18 1/2 grains of Red Dot is bushing #474. IMPORTANT: Due to agitation of powder during the loading operation, different models of loaders require different bushings. Therefore this chart should be used only for 366 Auto and Hornady's APEX. All charges listed on this chart 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 operator's technique and/or powder variables.
Pistol Powder Measure Bushing Chart
Bushing Size #7 : Accurate Arms #2 - 5.5
Accurate Arms #5 - 6.8
Accurate Arms #7 - 6.9
Accurate Arms #9 - 6.9
Alliant Powder Pistol - 5.1
DuPont 700X - 3.3
DuPont 4227 - na
DuPont SR 7625 - 3.6
DuPont SR 4756 - na
DuPont PB - 3.2
Bullseye - 4.1
Hercules 2400 - na
Hercules Red Dot - 2.8
Hercules Unique - 4.3
Hercules Herco - 3.6
Hercules Blue Dot - na
Hodgdon HP-38 - 4.8
Hodgdon HS-6 - 6.6
Hodgdon HS-7 - 6.7
Hodgdon H110 - 6.9
Hodgdon H4227 - 6.5
Hodgdon Clays - 3.1
Hodgdon Clays International - 3.4
Hodgdon Clays Universal - 4.1
Winchester 231 - 4.8
Winchester 296 - na
Winchester Wap - 5.6
Size 7
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