It is most likely a 44XL. Here is more information about the 44XL, the American version of the .410.

http://www.doublegunshop.com/forums/ubbt...df792#Post20243

I made a mistake in the above thread and that was the 1st use of the 44-40 shot. It was originally developed for the Winchester 1873. So the .44 Shot was around for over 40 years. A word of caution. None of these guns can be shot with normal .44-40 ammunition without danger of destroying the firearm.



He should measure the bore to be sure. The chamber should be under 2" for a 44XL.

The majority of 44XL sxs guns were produced in Belgium, though I have seen a few that were produced in the states.

Pete