Im not a big Weatherby fan but I do like the 257. I have been close to building myself one many times. Built one for my buddy in Montana whos range I hunted. It was nasty on whitetails. I mean nasty. Hit them in the wrong place and your loose half your meat.
Hence WHY, I liked ( and owned ), the thicker jacketed, Heavier, 150 gr Hornady Bullet at, 3,077 fps in the .270 Wby Mag. Rifle. ( Killed Well,.. ALWAYS and With, very Little, Meat loss ! )
The .264 Win Mag., WAS Also, very, VERY,.. "Hard", On Meat with, "Some", Bullets !
This was back in, the 1970's to 1990, Era,. when, Big Game was, everywhere,.. usually !
And for the Most Part, Bullets, WERE,.. KRAP !!
"Trophy Horn Hunting" & the Range Finder, wasn't invented, YET, we All were all proudly, Meat eaters, back, then !
IMO,. If, Hunting with, a .257 Weatherby,,. Pick,.. a TOUGH Bullet and TEST them !