I am puzzled by the following data:
Lyman Third Edition recipe...
115g JHP
Power Pistol start 5.9g
Power Pistol max 6.5g
CCI 500 SP
Federal Case
Sierra 5th Edition recipe...
115g JHP
Power Pistol start 5.1g
Power Pistol max 6.0g
WSP Primer
Starline Case
Speer 14 recipe...
115g TMJ
Power Pistol start 6.2g
Power Pistol max 6.7g
CCI 500 SP
Speer brass
I ASSUME, hopefully correctly, that SP primers are BASICALLY the same and brand is not a significant part of the equation. Same with 115g jacketed bullets. The brand shouldn't affect the load. Same with the brass. Especially since I tend to load toward the low end, not the high end.
I settled on 6.0g Power Pistol, but have yet to fire them. I have had good luck with 5.3g of PP with a 124g bullet.
Why is there such a difference in the powder charges? Am I missing something, and is 6.0g PP appropriate for a 115g jacketed bullet?
Lyman Third Edition recipe...
115g JHP
Power Pistol start 5.9g
Power Pistol max 6.5g
CCI 500 SP
Federal Case
Sierra 5th Edition recipe...
115g JHP
Power Pistol start 5.1g
Power Pistol max 6.0g
WSP Primer
Starline Case
Speer 14 recipe...
115g TMJ
Power Pistol start 6.2g
Power Pistol max 6.7g
CCI 500 SP
Speer brass
I ASSUME, hopefully correctly, that SP primers are BASICALLY the same and brand is not a significant part of the equation. Same with 115g jacketed bullets. The brand shouldn't affect the load. Same with the brass. Especially since I tend to load toward the low end, not the high end.
I settled on 6.0g Power Pistol, but have yet to fire them. I have had good luck with 5.3g of PP with a 124g bullet.
Why is there such a difference in the powder charges? Am I missing something, and is 6.0g PP appropriate for a 115g jacketed bullet?