I love my 257 weatherby. Use it for antelope and deer ever since I got it. Some times take a different rifle with just to use them. I Shoot the 110 accubonds tho. Had got some Barnes ttsx for it I like them out of my 338 win mag.
Started to work up a load but the shooting range closed And the only other one I know of is 80-90 miles away so just stuck with the accubonds. They haven't gave me a reason to switch just gets hard to find them at times
I have one myself but I don't shoot it. It was given to my by my uncle that passed away so it more sentimental to me then anything. I've heard a lot about how well they shoot too. I was going to use it as an antelope gun but when he passed I wanted to keep them in good condition so in the safe it went.
The wife has one that is just a great caliber. 120 Nosler partitions do the trick on every mule deer and elk I have seen shot with it. Got my cow at 536 yds this year with is one shot dropped her in her tracks. My wife shot a 350"+ bull with it last year and he went maybe 30 yds after 2 well places shots.
It's a great chambering. I had one at one time and in a moment of weakness I let it go. My son grew up using it on antelope and thought it was magical. Just aim at whatever distance, shoot and a dead pronghorn.
There are a lot of posts here several years old about the .257 Wby. I had one and it shot great. I worked a long time to develop handloads for it. Weatherby's are a little difficult to work up handloads that shoot better than the factory stuff. Took me around a year for my .300 Wby. I really can't justify spending up to 4 or 5 bucks a shot for the factory stuff, I like to shoot too much!
Anyway, I've shot a .25-06 for over 40 years and my handloads are within 150 fsp of the Wbys. So one of my buddies offered me a price I couldn't refuse and he shoots it now.
Great caliber and great med sized game rifle, extremely flat shooter and one of a very few cartridges you can set for a point black range of 320 yards and over. It sends the specified 100-120 grain bullets downrange really well and although overbore, with proper barrell care, I dont think its an issue.