Please help ID the gun this barrel goes to..

[Mousegunguy]

Howdy,
Any ideas?
28in .50 smoothbore 7/8th
I’d appreciate any help finding out what this was made for. I’ve never seen a 50 smoothie before.

Thanks for your help..,

 

[SDSmlf]

Howdy,
Any ideas?
28in .50 smoothbore 7/8th
I’d appreciate any help finding out what this was made for. I’ve never seen a 50 smoothie before.
View attachment 378025View attachment 378026View attachment 378027View attachment 378028Thanks for your help..,

Maybe tell/show us what is stamped on the barrel flats other than the visible serial number.

Also, how did you measure 7/8” across the flats? A 50 caliber in 7/8” barrel doesn’t make sense.

 

[Mousegunguy]

Maybe tell/show us what is stamped on the barrel flats other than the visible serial number.

Also, how did you measure 7/8” across the flats? A 50 caliber in 7/8” barrel doesn’t make sense.

The bottom picture shows the stamps. A diamond (Sharon?) and a slash.