From Forward_Observer at THR who owns a pair of replica Deringers:
Quote:
The barrel is 2 7/16 inches long not including the tang. It's hard to measure the bore because it has an odd number (7) of lands and grooves so there is always a groove opposite a land. However, the set came with 7 cast balls hidden in a compartment under the bullet mold. It's claimed online that the original assassination pistol was .44 cal. The balls that came with the set measure .40. Using pillow ticking that is normally .018 inches thick and doubled since it surrounds the ball would come to .436 cal. Close enough to call it .44 cal I guess.
Cheers
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