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Lyman 49th edition shows a 255 grain lead bullet with a maximum load of 8.5 grains of Unique, fired from a 16" barrel at 1110 fps. This is in their rifle load section. I have fired a 250 grain rnfp lead bullet with 9.0 grains of Unique in my Ruger Blackhawk and it was very pleasant to shoot, Don't know the fps.
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