Sorry to say nh, I just got the barrel Sat. b4 Christmas, so I haven't a chance to play with it yet.
Soon as I get caught up on the holsters that I'm behind, I plan on it though.
It is however, 17" Pac-Nor Super Match blank, 1-9" twist polygonal rifling. Built by OTT of Dover HN.
I use the RCBS 6.5-257 Rob.AI dies with one pass on the 7x57R brass.
I'll do a range report soon as I can get some shooting time in. But I would expect, it'll shoot sub moa like the rest of the OTT's I have.
I may opt to replace the 4x leupy that on it now for a variable.

Dave