Jansen Sons and Co 12 Ga SxS - what's safe to shoot in it?

[KotKotofeich]

I have one of these laying around, seems in an ok shape - tiniest bit of play barrel/receiver, honest dings but nothing broken. What ammunition is safe to use in it? Here are the barrel markings:

Modern ammo 2 3/4 ok? Guessing no steel shot? Can I figure out what it's choked to (barrel is marked "choke bored")?

Thinking of selling (I know it's a cheap shotgun, don't worry) and want to make sure I put the information on what's safe and not safe to use in it in the ad.

 

[gunsaholic]

The gun is only proofed for black powder and likely has short chambers. So going by what it was proofed for, along with other issues, no it is not designed for modern smokeless ammo. This is the short answer to your question.