Picked up a 700 action on the cheap and was thinking about this caliber. But, I don't know if I can get the velocity from this round to suit my needs. Was hoping to use 210 grain scirroccos. I noticed Nosler makes 180 grain ABs in .338. Anybody have experience with this caliber; barrel length, loads, twist, fps, bullets, etc? Thanks. Will be a dedicated elk rifle.