160 AB @ 3000fps, zero for MPBR. In my case 3" high @ 100 yds.
Probably about a 340 yard MPBR.
If that was a guess it is pretty close. At 7500 ft altitude and 50F degrees my calculator suggests about 348 yards. That is with a max rise or fall of 3.85" above or below line of sight or MPBR for a 7.7" target. Zero range would be 295 yards. Approximate retained velocity and energy of 2624fps and 2446fpe.
Not much different than a 140g AB @ 3214fps and 3" high at 100. 307 yard zero, 360 yard MPBR. Approximate retained energy and velocity of 2666fps, 2208fpe.
At 600 yards they measure up about like this:
140AB: -39.3", 2335fps, 1694fpe, 17.1" 10mph drift
160AB: -42.7", 2309fps, 1894fpe, 16.2" 10mph drift.
My own preference is to MPBR sight for a smaller 6" target (vs 7.7" in the above calculation.) Max rise/drop from line of sight is 3", zero is 277 yards, MPBR 326 yards. with a 140g AB at 3214fps/7500ft/50F. (3214fps is my chrono'd M.V.) Since 1982 when I started all but 4 or 5 of my kills have been closer than 326 (including antelope) so the 6" target MPBR works well for me. For mule deer keep it on fur out to around 450 yards, about 500 yards for elk. (This obviously depends on where you want to hit, shoulder joint, vertical center, heart, etc.). And, obviously, you need to check the trajectory at the range, not just with a calculator.
