Thanks for the twist rate. I was told it was probably a 1-56 or a 1-60. I just shined a little flash light down it,probably not the best way to tell. I also got ahold of a lyman .535 mould pretty cheap, hoping it will work for this barrel. One guy told me that I might want to pull the breech plug to make sure that its bottomed out. But the touch hole is drilled into it just a little so I'd have to take it out as well. I'm not really wanting to do this cause I havn't ever pulled a plug before. If Bill did it don't you all think that it would have been done right? Thanks,Dew