Thanks guys.
Just back from more tries. Maybe on the 257. Third shot went for hell, first two 3/4". Ultra Lightweight.....third could have been too hot a barrel. Did how ever get my best group with 140s Swifts in my 6.5/375 Ruger. +3/4"@3320ft/sec. So there is hope for the 257 Wtby.
Heeler75 I...