I own a LOT of rifles. I own more rifle chambered in the 257 Roberts or the 257 Ackley Improved than anything else except MAYBE 22-250 and 22-250AI.
First CF rifle I ever owned, was a gift from my dad and grandfather for my 12th birthday, over 50 years ago. A custom 98 in 257 Roberts.
I have a #1 on Lay Away at Cabelas in Maine. It's another 257 Roberts "B" Between then and NOW I've probably owned 50+ rifles in 257 Roberts from nearly every maker in the game since about 1935 or so.
They are currently building my once in a life time rifles, killer wood, engraved, inlaid etc. One is a #1 "S" in 257 Roberts the other is a #2 in 257 AI.
I hunt, a lot. I've kept a log book since my first hunt at age 12, 50+ years ago. Of all the deer I've killed in 50+ years, 84% have been killed with either a 257 Roberts or a 257 AI. It's a LOT of deer.
I've killed deer with nearly every modern CF from 17 Remington to 338 Win Mag and most things in between. I always go back to the 257 for deer/antelope.
Ballistically. If I didn't reload and planned on shooting deer, I'd buy a 25-06. Being over bore it will not do anything with light bullets that you can't do with a Bob, with less powder. As long as you are going to use 100-120 grain bullets then the 25-06 gets the nod, for the non reloader.
Recoil is really to high for a serious varmint rifle, ala a couple hundred rounds in a day. On the other hand it's a great coyote rifle, for KILLING coyotes. It's a little rough for hide hunting.
The Bob and certainly the AI will push even 120s to within the velocity range where the difference between the 25-06 and the Roberts is the difference of a fast barrel versus a slow barrel, 100-200 fps. In other words a "fast" slick barreled 257 Roberts may well be faster than a "Slow" 25-06 with the same bullet..
The Roberts or AI are better bore balanced and make better varmint rifles. Recoil is considerly less and use less powder to achieve the same velocities with less powder/recoil with light bullets.
The 250-3000 is a classic. Not quite as fast or flat as either of the other two with heavy bullets. But 2800 fps with a 100 grain bullet has killed a lot of critters. Excellent varmint rifle with 75 grain bullets. I've very seen a inaccurate 250-3000. My son hunts with a 77RL in 250-3000 for nearly everything smaller than elk.
If I had to choose one, it would be real hard to go wrong with a 257 Roberts in your rifle of choice. Almost every modern rifle has been chambered in the 257 Roberts over the last 30 years.
As far as Rugers, #1 "B" and "A". 77s in MKI, MKII and Hawkeye in R, RL, RS and ST.
Cousin Wayne retired this year from the ranch. He wanted a rifle for his "present". He could have chosen nearly anything within reason. His choice? A #1 "B" punched to 257 Ackley Improved. Thus the one in Maine. "I've always wanted one since I shot your's 30 years ago".
Yes, I own a couple of 25-06s and 250-3000s and have killed deer and antelope with both. They both work fine. They just wouldn't be my FIRST choice.
I'm working on another rifle for this fall. You guessed it, a #2 with a factory 26" #1 barrel and #1 wood but with a straight wristed stock, in 257 Ackley Improved. I'm working on the contour/shape of the lever right now.
Ross