Shooting Modern Ammunition in a Vintage Forehand Arms Shotgun - Safety & Compatibility

Question
I have inherited a Forehand Arms Company Single barrel, break action shotgun.  Has a patent stamp of February 4, 1898, serial number behind trigger guard and on barrel match. Barrel is stamped "Fine Decarbonized Steel" Not really concerned about value, main question is:  Is it OK to shoot modern ammo in a gun this old?

Answer
Hi Doug,

Decarbonized steel barrels were originally designed to handle low pressure loads such as black powder. I recommend that you do not attempt to fire this gun using smokeless powder. I would just enjoy it for what it is and not risk firing it.

Thanks for the question Doug.
Sid Lark