摘要：

Choosing a black powder or black powder substitute is as personal as selecting a favorite toothpaste or pizza topping. Any safe propellant is ideal for making a "good boom" at an empty tomato juice can residing peacefully in front of a dirt berm. Cowboy Action Shooting, as one example, is accomplished at close range and there is no crying need for either super accuracy or big power. For such work, any powder allowed on the range is acceptable. My...

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