Hello, finally able to measure.

Balls = 2.511
Distance between firing pins = 1.225 from centers of pins
Weight with original barrels = 8 3/4 pounds

I have been using single F with MEC 10 gauge wad cut to length and #3 steel shot in an Alcan all brass hull for duck hunting. Now that I have an Ithaca NID 2 7/8, I may retire the Smith?

Factory barrels are 30 inch, and the hammer barrel that also fit are 32 inch

Hope this helps
Mike

Last edited by skeettx; 09/02/10 01:18 PM.
USAF RET 1971-95 [Linked Image from jpgbox.com]