I offered information in this thread several years ago in 2016, page 2.
Since then I acquired a new 22" tikka takeoff barrel in 25-06 for $75. I just had to use my 257 Roy reamer when I discovered it was the same thread size as a post 64 model 70 in my collection. Shortened the shank a bit and opened up the chamber.
Previous Roys I posted about were all 3 groove Liljas. The Tikka is a 6 groove so I now know the reamer's custom specifications works accurately with at least one other groove configuration.
Results: Model 70 257 Weatherby, 22” new tikka barrel Berger 115 VLD
68 gr of SCC IMR 7828 fed 215 match velocity 3280 ave
60 degrees
Thinking of trying RL-33 for grins to see how it compares to the longer 27 1/2" barrel.
