Man it's you'r gun do with it what you want. My view is thAt there is no shortage of shot guns in the world. And you can always buy a set of tubes for it. Secondly the set you have are damaged, they're a better choice for conversion than an undamaged set. I would go with a 30-30 or 30-40, block size is your limit. Your only rechambering a set of damaged barrels, the gun is still viable.