Sorry didn’t go through everyone’s comments on the thread, but the 257 Roberts, 257 CM and 25 Souper all perform the same. The Souper has been around for decades and fulfills the SA side easily in the .257. .257 bullets do not present the same COAL problems for SAs. The 308 Win family cases will do the same as a CM case when it comes to a .257. If I were to want a .25 Wildcat it would be 25-284. Plenty of 6.5-284 Norma brass available from Norma and Lapua. Would smoke all the other three in a SA. Nothing wrong with the other three, but a 6mm CM would cover the bases well in a SA, would have a tougher time keeping up with the 25-284.
