I-too think the 270 Speer would be a great bullet, with excellent penetration at the 57mm case's velocity levels.
; It should run in the 2,225 to 2,250fps range with top-end loads in the m96.
; If memory seerves me correctly, John Taylor placed the 9.3x62's original speeds, those that gave it, it's fame and glory in Africa, at 2,157fps range with the 286gr., soft and solid.