AH senior member
- Jul 28, 2018
- Reaction score
Precisely...Which is why something like this may be the best way to predict knock down "potential"...The bullet transfers its energy to the steel target instantaneously...The steel target absorbs this energy and then reacts...It either falls back or remains standing...Our steel targets weigh approximately 20 lbs...I am not insinuating my .45/230 grain bullet would knock a 20 lb. coyote down...I am insinuating that my .45/230 grain bullet possess more knock down "potential" than my 9mm/115 grain bullet...And this is based on my observations...When I shoot a 20 lb. steel target with my 1911 the target appears to fall faster and harder, compared to shooting it with the Glock...Occasionally the target will not fall back when shot with the Glock...At the beginning of this post I used the term "energy"...I now think I should have used the term "momentum"...The 2 rounds mentioned have essentially the same kinetic energy (362 vs. 356 ft-lbs) with the edge going to the 9mm...But, the edge in momentum goes to the 1911 (27 vs. 19 lb-ft/sec) which equates to a 42% increase...So, I will propose that my 1911 setup possess 42% more knock down "potential" than my Glock setup...And, that this increase in knock down "potential" is directly related to momentum and not kinetic energy...When you hit steel the bullet has no penetration which loses force. Steel gives no penetration so it has to move. That movement is your knockdown or knockover power. All the energy is concentrated on that one spot and in one direction.
Disclaimer: I am a fat guy that moves slow ('bout time fat and slow gets some recognition)...