Winchester spherical powders are known for theirconsistent burn rates and clean burning characteristicsand are widely used for reloading shotshell,handgun, and rifle ammunition. An excellent choice for many handgun loads, 231 is ideally suited for 38 Special and9mm but also works well in a wide range of other cartridges from 32 ACP to 45 LongColt. An extremely versatile and economical propellant.
Sinclair, Issue:5A, Page:099
Sinclair, Issue:5B, Page:099