Well after an inspiring post I read on here last night, I got the gumption to go dig out my old Handgonne and knock the rust off and out of it . I bought this thing from a fella over on another gun forum years ago. I just never did anything with it. I think its time. I believe it to be homemade and it is steel of some sort. A very nice job if it is. It has a thick knurled band around the breech section. It measures about 54 cal, but I believe there is enough to it that I could bore it to say .75. Any suggestion on what to do to it is greatly appreciated. Can some of you post pics and dimensions to your tiller (handle). Thanks for reading.