wiiawiwb
Member
- Joined
- Jun 30, 2010
- Messages
- 302
I'm looking to see the number of grains of Unique to use for my 45 LC. I have a Ruger SRH and just bought some Missouri Bullets, 255 gr SWC and 250 gr RNFP.
For the SWC:
When I go to Lyman's 49th edition, for the 255 SWC I assume I should follow the #452424 formula. It calls for starting grs of 6.0 with a max of 8.0. Is that correct?
I also went to the Alliant website and using Unique and 45LC it shows the following guide:
http://www.alliantpowder.com/reloaders/powderlist.aspx?page=/reloaders/powderlist.aspx&type=1&powderid=3&cartridge=36
It shows for a Speer 250 gr SWC to use 9.5 grains. That is substantially more than what Lymans is calling for.
Why are they so different and which is correct?
For the RNFP:
Would I follow the #454190 or #452664 formula? One has a starting grains of 6.0 and the other has a starting grains of 6.3
The Alliant website doesn't show a RNFP formula for a lead bullet. It shows a 250 gr jacketed HP.
How do I make sense of what seems to be totally different formulas and get it right? Any help would be appreciated.
For the SWC:
When I go to Lyman's 49th edition, for the 255 SWC I assume I should follow the #452424 formula. It calls for starting grs of 6.0 with a max of 8.0. Is that correct?
I also went to the Alliant website and using Unique and 45LC it shows the following guide:
http://www.alliantpowder.com/reloaders/powderlist.aspx?page=/reloaders/powderlist.aspx&type=1&powderid=3&cartridge=36
It shows for a Speer 250 gr SWC to use 9.5 grains. That is substantially more than what Lymans is calling for.
Why are they so different and which is correct?
For the RNFP:
Would I follow the #454190 or #452664 formula? One has a starting grains of 6.0 and the other has a starting grains of 6.3
The Alliant website doesn't show a RNFP formula for a lead bullet. It shows a 250 gr jacketed HP.
How do I make sense of what seems to be totally different formulas and get it right? Any help would be appreciated.