Originally Posted by Starman
Originally Posted by Coyote_Hunter

Admit it or not, you use both velocity and mass an in your calculations - not velocity alone.
Which means you are using energy calculations.


He is applying the Newton 2nd law of motion Force calculation not an Energy calculation.
F= ma.......presence of velocity/acceleration means the mass has direction, which energy does not.
one only achieves an energy value by means of the directional F calculation.

Coroners go about formally describing tissue damage as result of blunt force trauma or sharp force trauma ,
not blunt ft/lb trauma or sharp ft/lb trauma.

this page 1 comment is correct:
Originally Posted by Formidilosus

"Ft-Lbs energy" is not a wounding mechanism. .


Velocity and acceleration are two different concepts. There is no mention of acceleration in the formula for energy, only mass and velocity (E = 1/2*m*v*v). Acceleration measures a change in velocity over time. (v1-v2 / t1-t2)

A projectiles KE at any point in time does not depend on its acceleration, which requires multiple points in time. When smokingrope adds a specific mass (or range of masses) to his calculations and the maximum destructive capability of a bullet at a specific velocity, he is considering KE, not velocity alone and not force.

Quote
and this comment is also true , but nobody actually claimed energy was not required.
Originally Posted by Model70Guy
Work cannot be performed without energy....


*****
Bullets expend energy as they travel through tissue, quantity of energy lost is equal to the work done on tissue
– such work is determined by forces acting over distance.

The directionless value of energy is only a measure of potential wounding, it is not in itself a mechanical action,
process, technique or instrument of wounding.


You get it exactly, and that is what I've been saying consistently.

A bullet's energy determines its MAXIMUM destructive capability, not the ACTUAL destruction it will do. The ACTUAL destruction depends on many other factors including bullet construction and types and amount of target material encountered.

A projectile's velocity, considered alone, tells you nothing about its destructive capability. You have to consider mass as well, which is exactly what smokinrope does when he says that at 1800fps he would choose a bullet somewhere between a 60g and 500g partition for elk. If bullet mass didn't matter the1800fps 60g Partition would be equally effective on elk.

Although the 60g and 500g Partitions have the same "Optimum Performance" velocity (1800fps minimum to unlimited), there is a reason Nosler does not include the 60g Partition in their recommendations for elk sized game.


Coyote Hunter - NRA Patriot Life, NRA Whittington Center Life, GOA, DAD - and I VOTE!

No, I'm not a Ruger bigot - just an unabashed fan of their revolvers, M77's and #1's.

A good .30-06 is a 99% solution.