.22 Caliber Round Shot

I've shot it. It was not consistently large enough to not roll down the barrel. That might have been my chamber BUT once I realized the potential for a "dry" fire I put them on the shelf and they are still there today. The sticker on them says "DO NOT SHOOT". Your mileage may vary.

I had a Shark pump action repeater that only shot round balls. It was fairly accurate and a lot of fun to shoot. It was actually a really cool co2 gun. I doesn't live here any more and I kind of miss it.

I think they'd be great for a smoothbore. None if my guns like them 

Inconsistent sizing, as said, will roll out of the barrel.

They shoot good out of my Benjamin 392. I used to shoot the Benjamin 22 round balls out of my old Benjamin 312 when I was a kid 50+ years ago. They seem to hit hard, probably because they are solid.