I should have added that I think that the Solo looks awesome, and if you could also run regular old ball through it at the range, I'd have one in a heartbeat.
The one that I tested would consistently jam on either the last or penultimate round using plinking (S&B) ammo. It was a pretty early gun, and had maybe 300 rounds through it at the time. Not a deal killer from a CC perspective (it ate Hornady CD with no problem), but it just wasn't for me.