03-10-2011, 05:42 AM
Ref Post #4: "Actually, no it is not a precise measure of lethality." -- That is precisely correct in the sense that impact location makes a huge difference in how the target responds. Further, the metric assumes bullets of similar construction.
As far as the "100 meters" -- my apologies, the reference is for 1100 meters (the post has been corrected). At this range, the M80 has slowed to about 1000 ft/sec. A 123 gr 6.5 projectile matches the HITS score at about 1055 ft/sec. Getting this velocity at 1100 meters with a BC of about .520 requires a muzzle velocity of approx 2550 ft/sec. This is a fairly tolerable load.
As far as the "100 meters" -- my apologies, the reference is for 1100 meters (the post has been corrected). At this range, the M80 has slowed to about 1000 ft/sec. A 123 gr 6.5 projectile matches the HITS score at about 1055 ft/sec. Getting this velocity at 1100 meters with a BC of about .520 requires a muzzle velocity of approx 2550 ft/sec. This is a fairly tolerable load.