I would choose a 10 twist for 250 Berger because it is better to spin them harder then not enough. It it was me i would think about a 9 to 9.5 with the option of shooting the 300 grain Bergers. They will also work in a 10. In competition i broke records with Broughtons which is buttoned and also with Kriegers which are cut. Both companies have given me great barrels. MattI am shopping for a new barel for a 338rum or edge still undecided but plan on shooting 250gr Bergers. What barel twist should I get and will I see an advantage with button rifling or not?
Thanks