Does tally supply models for all the various 1885 barrel contours or just the modern cf calibers with the tapered octagonal barrel?
Call & ask. They are very customer oriented. Gary Turner is easy to get along with. It's best to call them early morning. He will respond timely to e-mail inquiries as well.
My last purchase was an XP 100 base. He told me it was one piece. I said I HATE one piece bases. He said he'd cut it for me, polish it and send to the bluers at no extra charge. THe first one was lost in the mix at some point so he made another and finally shipped it to me. I couldn't be more happy.
The conventional 1885 base is really cool and very nice.