RCBS Powder Bushings for The Grand Progressive Shotshell Press

Powder Charge Weight in Grains
Grains 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
Accurate Arms Nitro 100       420 432 444 456 468              
DuPont 700-X   402 414 429 441 453 465   486 498          
DuPont PB 366   390 402 414 426 435 447 456 465 474 486      
DuPont SR 7625       381 390 402 414 426 438 444 453 462 474 486  
DuPont-800-X   372 390 402 414 423 429 438 447 459 468 480      
DuPont SR 4756   366       408   426 435 447 459 471 480    
DuPont MR4227                 366     390   408 414
American Select       423 432 447 456 468              
Hercules Red Dot   423 438 453 468 480   498              
Hercules Green Dot 390   420 435 447 456 468 480              
Hercules Unique 354   381     414 423 435 444 453 465 474      
Hercules Herco   381     414 426 438 450 462 471     498    
Hercules Blue Dot         366 372 381 390 396 408 414 423 435 441 447
Hodgdon Clays     429 441 456 468                  
Hodgdon International   390 402 414 423 435 447 459 471            
Hodgdon Universal   354 366   390 402   420 429 438 447 456 468 480  
Hodgdon HS-6                           381 390
Hodgdon HS-7                 354           402
Scot 1000       447 456 468 480                
Solo 1250         420 432 444 456 468 480   498      
Winchester 540                     360 366   381  
Winchester 571                             390
Winchester Super Target           429 438 450 459 471 480        
Winchester Super Lite         354   372 381 390 402          
Winchester Super Field                         420 426 432
Powder Charge Weight in Grains
Grains 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
Accurate Arms Nitro 100                              
DuPont 700-X                              
DuPont PB                              
DuPont SR 7625                              
DuPont-800-X                              
DuPont SR 4756                              
DuPont MR4227 420 426 435 441 447 453 462 468 474 480 486   498    
American Select                              
Hercules Red Dot                              
Hercules Green Dot                              
Hercules Unique                              
Hercules Herco                              
Hercules Blue Dot 459 468 474                        
Hodgdon Clays                              
Hodgdon International                              
Hodgdon Universal                              
Hodgdon HS-6 396 402 408   423 429                  
Hodgdon HS-7 408 414 420 429 435 441 447 453 459 465 471        
Scot 1000                              
Solo 1250                              
Winchester 540   402 408 414 423 429 435 441 444 450 459 465 471    
Winchester 571 396       423 429 438 444 450 456 462 468 474 480 486
Winchester Super Target                              
Winchester Super Lite                              
Winchester Super Field 441 450 456 462                      

How to select bushings for half grain charges:

Powder bushings are identified by numbers that correspond to the size of their inside diameter. (For instance, the inside diameter of the number 456 bushing is .456 inches). 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 bushing nearest the result.

Example. To find the bushing for 18 1/2 grains of Hercules Red Dot powder, note that bushing number 468 gives a charge of 18 grains and that bushing number 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 number 474.

Note: All charges listed in 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.

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