I have a 257 weatherby and a 6.5-300 wsm. the 6.5
wsm is what i want my 257 to be. I've thought about rebarreling my 257 to a 6.5 weatherby just to mess with. Velocity will be the same as the 6.5-300wsm so i might just sell the 257. Not sure yet all i can say is the 6.5 doing 3250 with a Berger 140 is **** impressive
With a mag face bolt on your 257 Wby…rebarrel it to the 6.8 Wby (same case as the 257Wby). You can push 165gr Matrix VLDs to over 3225fps. The Berger 170 VLDs are in the mail…150gr bullets to over 3350fps…
to nit-pick, but wouldn't that just be a regular ole' .270 Wby Mag?
Would there be any reason to rechamber my .257 wby in something 6.5 seems like velocity and ft lbs is better in .257 out to 1000?