I shot dogs with a guy a few years ago that was useing 240MKs and the WSM case, if memory serves he was getting 2450fps. The gun was set up soley for long range and we where shooting past 2000 yards that weekend.
Notice barrel angle vrs the scope angle in the far setup,he was useing a Harbor Engeneering mount. The wind that weekend really made it tuff shooting that far, we got close a few times but never did a dog past 2000. He did however get into the 2000 yard club with this unit the next time he went out.