I've had several: .22lr/20gauge, .222/20, 30-30/20, .22mag/20, and one .410/.410 (believe it was called the model 242). Only have the .22lr/20 c now, with the original roll up soft case.

The 30-30/20 was great, with a rifled slug it actually shot both barrels to poa out around 60 yds. Sold it to a buddy of mine.

The only real issue I've seen with them is its common to get light strikes but there is a ton of info available about dealing with it.