Taylor KO Factor (TKO) - Hunting Loads
#161492
08/11/2015 3:05 AM
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Joined: Nov 2013
Posts: 58
4MAG4
OP
journeyman
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OP
journeyman
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I was reading the article "Gun Notes: A Common Sense Look at Handgun Hunting" under John Linebaugh's writing page. One of the topics within this article was the Taylor KO Factor. What are your thoughts on this subject and the formula? The attached link provides a little more information on the formula. Scroll halfway down the page to review it. http://www.africahunting.com/threads/john-howard-pondoro-taylor-1904-1969.3242/
"Safety is something that happens between your ears, not something you hold in your hands."
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: 4MAG4]
#161498
08/11/2015 4:07 AM
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Joined: Dec 2003
Posts: 5,057
Gary
Distinguished Master
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Distinguished Master
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It's a better measure of performance than simple kinetic energy. However I think we all struggle to determine a scientific way to predetermine how a bullet will perform on game when their are realistically too many variables that cannot be factored in. The will to live is a good example. Bullet construction and terminal performance is also important and something equally as important as TKO Value
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: Gary]
#161526
08/11/2015 5:17 PM
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Joined: Nov 2009
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sixshot
old hand
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old hand
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I agree, lots of variables but its probably the most realistic we have. A 22 caliber bullet at 7,000 fps would have a lot of kinetic energy but which would you rather use against a black bear, a 22 caliber bullet or a 250 gr. 44 magnum.
Dick
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: sixshot]
#161534
08/11/2015 8:57 PM
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Joined: Feb 2014
Posts: 312
SEAK
enthusiast
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enthusiast
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TKO to start and then what you learn in the field as you hunt.
Enjoying to circle of life
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: SEAK]
#161719
08/17/2015 7:42 PM
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Joined: Apr 2008
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cottonstalk
Pooh-Bah
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Pooh-Bah
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I agree, it's not the be all end all, but it's a good starting point. Taking game will help you decide what works best.
"If you get to thinkin' you're a person of some influence,try orderin' someone else's dog around" unknown cowboy
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: cottonstalk]
#161721
08/17/2015 7:58 PM
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Joined: Jul 2015
Posts: 4
newstart2k
stranger
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stranger
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Just remember to use it within its limitations as it was intended and it is a pretty good tool. If I wanted to compare the performance of say a 10mm and a 45ACP given common components and a common use the TKOF formula will give me valid results relative to each other.
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: newstart2k]
#161723
08/17/2015 8:47 PM
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Joined: Jun 2004
Posts: 270
Randominator
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enthusiast
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I like using the TKO factor, especially with revolver rounds.
I use an Excel file I created to record all of my load data. I have incorporated a formula in two separate columns that automatically calculates both kinetic energy and TKO when I enter the data.
NRA Life Member HHI Member VHA Member
"get busy living, or get busy dying"
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: Randominator]
#161744
08/18/2015 12:40 PM
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Joined: May 2012
Posts: 2,502
reflex264
Gun Slinger
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Gun Slinger
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Although it was with a rifle the same physics apply. When I killed that behemoth of a water buffalo I tested bullets against bone and simulated flesh for months. There is no simple formula to apply to any projectile intended for the purpose of killing. There certainly is a necessity of KE involved to destroy the things that make animals live. In that regard the TKO has some merit.
"A quiet hit in the right place is better than a loud miss in the wrong place followed by 10 more shots on the run"
I was a handgun hunter, when handgun wasn't cool.....
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: reflex264]
#161757
08/18/2015 6:23 PM
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Joined: Jun 2010
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tradmark
Shooting Expert
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Shooting Expert
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I read both taylors work and the book about taylor by capstick. All the formulas have their place and none are without exceptions. People dismiss ke and just dont understand what the formula is trying to describe nor how to use it. When used appropriately it gave give you a guide in certain elements of terminal performance and so can taylors but in the end i think both are nonsense used as a stand alone and unlike tko values gun writers use KE to describe that which it was meant to describe. It is simply describing the ability of an object in motion to do work. If there was a projectile out that could handle the velocity of 10000fps it would be very destructive even if it was 22 caliber. Its no secret what works in the hunting realm and newer and better bullets keep changing what we can use effectively. No formula tells it all
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: 4MAG4]
#161762
08/19/2015 12:21 AM
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Joined: Jan 2004
Posts: 1,212
Bullelk Hunter
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My TKO = Big hole in; Bigger hole out. .50 440WFNGC !!
BullElk Hunter (Gerry)HHI #2933 And I heard the voice of the Lord saying, whom shall I send and who will go for us? And I said: Here am I, send me!(Is. 6:8)
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: Bullelk Hunter]
#161779
08/19/2015 12:25 PM
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Joined: Jan 2009
Posts: 9,836
Whitworth
Shootist
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Shootist
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My TKO = Big hole in; Bigger hole out. .50 440WFNGC SWC!! I agree, but how can a WFN be a semi-wadcutter? Sorry, just confused.
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: 4MAG4]
#161791
08/19/2015 6:16 PM
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Joined: Jan 2004
Posts: 1,212
Bullelk Hunter
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obviously you are correct, but in the end does it matter? Everything I shot with either style exhibits the same results. clean holes on both sides and very dead animals.
BullElk Hunter (Gerry)HHI #2933 And I heard the voice of the Lord saying, whom shall I send and who will go for us? And I said: Here am I, send me!(Is. 6:8)
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: Bullelk Hunter]
#162080
08/26/2015 4:47 PM
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Joined: Jan 2015
Posts: 860
karl
old hand
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old hand
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Question for folks on the forum here. When calculating the TKO, do you use the caliber of the bullet when fired or the expanded diameter assuming proper bullet function?
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: karl]
#162083
08/26/2015 6:48 PM
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Joined: Apr 2005
Posts: 6,963
KRal
Shootist
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Shootist
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karl,
It will be bullet dia. before it leaves the barrel.
It takes 43 muscles to frown and 17 to smile, but only 3 for proper trigger squeeze.
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: karl]
#162086
08/26/2015 7:36 PM
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Joined: Jan 2004
Posts: 9,608
s4s4u
Shootist
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Shootist
Joined: Jan 2004
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Ya, not all hunting bullets expand.
Rod, too.
Short cuts often lead to long recoveries.
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Re: Taylor KO Factor (TKO) - Hunting Loads
[Re: s4s4u]
#162089
08/26/2015 8:16 PM
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Joined: Dec 2003
Posts: 5,057
Gary
Distinguished Master
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Distinguished Master
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This site has a TKO calculator TKO Calculator
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