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Old 04-11-2012, 04:18 PM
oberon oberon is offline
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231, 296 , Unique all will produce decent performance in .357.
Unique will take up more space in the case than the others, and will leave some soot and crud on the gun, but shoots smooth and predictably. The dirt cleans up easy.
It is a dual base concoction, meaning that it has the usual cotton fiber based cellulose but also has some woopulp fiber cellulose incorporated in the formula. I'm sure it is done that way as a means to regulate the speed of the powder. Maybe someone here knows. The cotton (nitro)cellulose is faster that the wood pulp, eh?
Anyway, I do believe that is the source of the soot you get from Unique.
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