Hi guys, I have a question for you. I want to take a Handi Rifle and make a different caliber by using a 12 Ga bbl and use it as a mono block. The reason for that is ( I hope ) to have more than one barrell fit the mono block, and in that way have a larger range of cartridges to work with. I am not going for large cartridges here, things more like 300 whisper, 256 Win Mag. Thing is I know nothing about the conversion or if it is possible to do what I would like to do. So please feel free to give any advice. Just remeber I need the basics on this, as well as the bigger picture. Thanks for any help. Jetwrench