The 296 powder was developed for the 357 Magnum and 44 Remington Magnum cartridges. Winchester also recommends this propellant for use in 410 Bore AA loads..
Other Important Information:
- Do not exceed the loads displayed in the reloaders guide.
- Never mix any two powders regardless of type, brand, or source.
- Never substitute any smokeless powder for Black Powder or any Black Powder substitute.