Home Forums Hunting & Shooting Ask The Gunwriters Fire forming 257 Wby

After reading the posts from Mule Deer and 219 Wasp, I set my sizing die up according to factory recommendations - dialed down to the shell holder, then 1/8 turn further - and resized a fired case. This case was previously fired with the 67gr RL 120gr bullet load. At left in the photo below is the case that's been sized a second time, at right is a once-fired case.



Seems odd that a properly cut 257 Wby chamber could produce the case on the right.