For the 6.5x55, try the Horn 123grSST @ 3000fps. Zeroed at 250m, 2.9" high at 150m, 3.4" low at 300m. A 25-06 with 110gr Vld-X @ 3140FPS. is very slightly flatter shooting than the 6.5x55 123 SST with same 250m zero. I've used a .17 Remington on Coyotes, and it killed just fine, just keep to 300m and under.