I shoot a 203 gr. FN bullet (SAECO mould) in .44 Special. I have not chronographed 6.5 grs. Unique, but 7 grs. gives a muzzle velocity of 855 from a 4" 24-3 and 890 from a 6 1/2" 24-3. 6.5 grs. Unique would probably be about 40-50 fps less than these figures, at least in my guns.
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