About what I guessed for performance. Hmmmmm. This is a possibility.I never have, but lots of guys have done it, or neck down the 270 WBY. Basically, you end up with the same case capacity and performance as a 264 WM, but with fewer brass choices.
What bullet NEEDS a 7" twist in 1/4 bore?We built a 257 Weatherby and had a proper twist barrel put on it so that it can shoot a bullet that does the cartridge justice. We installed a 7" twist. This rifle went with us to Africa last weed and was responsible for animals from jackel to trophy bull eland.
Steve
https://hammerbullets.com/product-tag/257/What bullet NEEDS a 7" twist in 1/4 bore?
Even the 115gr Berger is fine in a 10" twist.
Interesting.
Cheers.