Re: Acceptable Velocity Standard Deviation?
You can get your loads down to the single digits. Factors that help
- Consistent internal brass volume (or weight sort them)
- Temp stable powder
- Quality primers
- very tight powder charges (within 0.1gr)
- powder charge that sits right in the middle of a node (requires ladder test or equivalent research)
- weight sorted projectiles
- number of firings consistent per case batch
- cases sized and trimmed to the same length
- minimal case sizing (0.001-0.002 shoulder bump OR neck sizing)
Thats about all I can think of at the moment