Re: Terminal Energy is.....?
How much energy to take a deer size game is an ongoing discussion that I think will never get resolved. The rule of 1000ftlbs certainly can work but has its problems too.
You have heard the comparison between the 22/250 and a 45-70. Which one do you think will take down a bull elk better? If you thought only energy, you would say the 22/250 and you would be in for a very long search.
The way I look at this issue is that the bullet has to first get into the boiler room. After that the amount of expansion determines the speed at which blood pressure/loss occurs. This determines how fast the animal goes down. There will always be a high percentage of animals that will bolt from the impact no matter how much "energy" you hit it with. Hitting that animal harder probably would not have changed the outcome.
At long range, we must insure an accurate hit. After that the results are pretty good simply because we use heavy for calibre match bullets (high SD, BC) that expand well at low impact vel (I like my impact vel to be 1200fps and up). If the impact vel is enough to ensure adequate expansion and penetration, the energy number is really a moot point. This is for cal 6.5 and up.
I always use this analogy to put energy in perspective. If you held a handgun in 9mm luger, 38 special, or 45ACP against the hide of a deer and pulled the trigger, would this be enough to kill that deer?
If you said yes, which I hope you would, look up the ballistics and energy figures and compare to what we launch at these same critters.
Hitting them "harder" doesn't make them anymore dead.