Originally Posted by gunchamp
Originally Posted by jwp475


For a handgun hunting bullet IMHO from 18 to no more than 24 BNH. Water quenched wheel weights will IME be from 21 to 24. If you are not running them more than 1200 fops then 11 to 12 BNH is fine. 1300 to 1400 fps needs to be at least 18 if hunting very large game. Deer do not need as much penetration and do not have as large of bones or body size as say a buffalo
Good info right here


Just don't generally/blindly apply this rule for other calibers/guns because it may not be necessarily so. The range of error/applicability is pretty wide/loose though, me thinks.

Velocity is being used as a surrugate metric for pressure as it relates to what is required for bullet alloy obturation and thus minimization of leading and hopefully maximization of accuracy. I read about the relationship of 4x480xBHN here -> http://www.lasc.us/FryxellCBAlloyObturation.htm

One should note that it relates pressure and not velocity. The actual relationship between velocity and pressure is tricky, not necessarily monotonic and, of course, is caliber dependent, GUN dependent and prone to spiking at the limits.


Last edited by alukban; 12/26/13.