Originally Posted by Michael Eichele
The 2 most defining ones for me was the 150 grain AB. One on a deer at 350 yards. Muzzle velocity was 2705 fps. Impact velocity while not verified should have been around 2050.
The other wad a dall sheep at 425. Impact shoul have been 1950.
The bullet was recovered from the deer. No it was not measured but looked textbook.
The bullet from the ram was not recovered but the exit hole was bigger than a US quarter.
Now these were above advertised velocities but well under 2100-2200fps.
The other was a bull moose with the 200 grain AB. 650 yards. Impact predicted at 2000fps. No recovered bullets but again good sized expanded holes on exit.
Again, above published but under 2100-2200.
Almost forgot.... These were all 30 cal.
Thanks for share these experiences. It may be that the Accubonds have an expansion threshold closer to their advertised claims than other bullets.
An impact velocity of 2050 fps on the deer suggests an elevation near 1500 feet. If the elevation was higher, then the impact velocity was likely higher also.
An impact velocity of 1950 on the sheep at 425 yards suggests an elevation near 3000 feet. If the elevation was higher, then the impact velocity was likely higher also.
Of course, if one has actually measured the BC and muzzle velocity in a given rifle and also has the ambient measurements for pressure, humidity, and temperature (from a Kestrel
, for example), then one can compute impact velocities more accurately than using published BC numbers and standard conditions at a given altitude. There is much less uncertainty with a chronograph a few feet in front of a block of gelatin.