Interesting old rifles. Which on of the 257s did you AI?
I moved from Colorado to Montana in 1975. At that time I only had one centerfire rifle, my Herter's .30-06. My new hunting partner up here had several rifles. We'd go gopher shooting where I used my .30-06 with 125 gr bullets and he'd use his .243 Win.
Then one day he gave me a .30 Gibbs case. I thought that case looked so cool that I carried it around in my pocket for several weeks, then convinced myself that I needed more rifles. I also went to a Kalispell gun show where I saw Les Bauska, a local gunsmith, who had a tapered octogon barreled rifle on his table that he had made. I also thought that it looked cool.
So in 1978 I went to Les's shop with my Herter's Mark U-9 .30-06 and asked him to rechamber it to .30 Gibbs. He didn't have a Gibbs reamer so he used an Ackley reamer and cut my .30-06 chamber to the Gibbs depth, which essentially gave me a .30 Gibbs. That was my new elk rifle (which over the years put 21 elk, 2 Shiras bull moose, an Alaskan caribou, and a mountain goat into my freezer).
I also took him an Interarms Mark X action and a .25-06 barreled action. I had him make a .22-250 tapered octogan barrel for the action and had him rechamber the .25-06 barreled action to .257 Ackley. I then bought two Fajen Fancy walnut semi inleted stock blanks that I fitted, glass bedded and hand checkered for these rifles.
I then had a .22-250 for varmints and an occasional deer and pronghorn antelope, my .257 Ackley for deer and antelope, and also used it for 3 Montana Bighorn rams, a Dall ram and mountain caribou in Canada, and for my second best 6x6 bull elk on a Montana Unlimited sheep hunt that turned into an elk hunt.