Accurate #9 is a handgun powder that is “ideal for high power loads in traditional magnums… such as the 357 Mag … also … large magnums such as the 460 S&W and 500 S&W for economical target loads. Made in the USA.”
Bottom Line: Still evaluating.
- Meters very well. So far the RCBS ChargeMaster has metered every charge exactly, while H110 charges would run over by 0.1 grain or so occasionally.
- Good amount of load data available, for magnum and heavy calibers.
- Lower flash than H110. Not sure I’d call it low flash overall though.
- I’ve had high shot-to-shot velocity variations with it.
- Limited application.