Small caliber smoothbore?

[bigted]

Britts you have done it again. I imagine a couple more photos like these and I will have need to put together a 45 cal smoothie. How does she do with patched ball?

 

[smoothshooter]

Hello,
I'm considering a 0.45 caliber smoothbore. I would be interested in comments specifically on:
Historical relevance - did such exist in 18th century?
Performance experience - for those that might have small caliber smoothbores, how does it perform?
Thanks

Smoothbores in all calibers were common.
Some started out that way, many more were rifles bored out smooth later for various reasons.