Terminal Ballistics Part 2: Hornandy Index of Terminal Standards. AKA HITS

Terminal Ballistics Part 2: Hornandy Index of Terminal Standards. AKA HITS
Posted by on Jul 25, 2012 in Articles, Bill | 0 comments

The Taylor Knock Out is a useful comparision of different rounds. That said TKO falls a bit short in some practicable application.

According to Hornandy the “Hornady Index of Terminal Standards” calculator is a resource designed to help hunters choose effective bullet/cartridge combinations for any hunting situation in the world.
Traditional muzzle energy figures do not take into account for the manner in which energy is transferred from the bullet to game animals. HITS factors in Bullet Weight, Sectional Density, Ballistics Coefficient, and Impact Velocity and delivers a rating that will fall into one of the four classifications below. Bullet construction is also a very important factor to consider. If you have questions as to which Hornady bullet is right for you, there is a quick performance reference listed at the bottom of the page.

The H.I.T.S formula = Bullet Weight2 / Bullet Diameter2 / 7000 x Impact Velocity / 100

The H.I.T.S. rating on Hornady ammunition is based on: 100 yard impact velocities for rifles, muzzleloaders, and shotguns and 50 yard impact velocities for handguns.

500 or Below — Small game weighing less than 50 lbs

501 to 900 — Medium game with a body weight of 50 to 300 lbs (e.g., deer, black bear and caribou)

901 to 1500 — Large and heavy, but non-dangerous game weighing from 300 to 2000 lbs (e.g., elk, moose, African plains game, bison, etc)

1501 or Above — Dangerous game of any weight (including, for example, big cats)

H.I.T.S TKO Bullet Weight Velocity Diameter Energy Momentum
7589 147 .50 BMG 660 3050 0.51 13630 287
3666 70.3 .458 Winchester Magnum 500 2150 0.458 5131 153
1102 35 .458 SOCOM 300 1800 0.458 2157 77
1239 26 .458 SOCOM 450 900 0.458 809 57
1716 42.9 .500 S&W Magnum 500 1200 0.5 1598 85
2333 41 .375 H&H 300 2550 0.375 4330 109
1325 37.7 .500 Linebaugh 440 1200 0.51 1406 75
1721 36.5 .45-70 450 1250 0.458 1560 80
2301 35.5 .338 Lapua Magnum 250 2940 0.338 4797 105
1212 35.2 .475 Linebaugh 370 1400 0.475 1609 74
1530 34.7 .405 Winchester 300 2000 0.4115 2664 85
852 30.2 .454 Casull 260 1800 0.452 1870 66
904 29.8 .480 Ruger 325 1350 0.475 1314 62
1535 24.9 .300 Winchester Magnum 180 3146 0.308 3955 80
1240 20.8 .30-06 Springfield 170 2850 0.308 3065 69
599 19.9 .44 Magnum 240 1350 0.429 971 46
1126 19.6 .308 Winchester 168 2650 0.308 2619 63
7.63 14.9 .30-30 Winchester 150 2250 0.308 1685 48
551 13.3 7.62mm Soviet 123 2420 0.312 1599 42
517 12 300 AAC Blackout 125 2200 0.308 1343 39
655 8 300 AAC Blackout 220 900 0.308 395 28
309 12.3 .45 ACP 230 830 0.452 351 27
392 11.3 .357 Magnum 158 1400 0.357 687 31
348 12 10mm 180 1250 0.4 624 32
187 10.4 .40 S&W 165 1080 0.4 427 25
517 8.7 .243 Winchester 85 2950 0.24 1642 35
236 8.56 .357 Sig 125 1350 0.355 505 24
187 7.31 9mm Parabellum 115 1250 0.355 398 20
215 6.2 .38 Special 158 770 0.357 207 17
287 5.78 .223 Remington 55 3300 0.224 1329 25
101 4.72 .380 ACP 95 980 0.355 202 13
90 4.64 5.45x39mm 49 3000 0.221 979 21
34 1.33 .22LR 30 1400 0.222 130 6

Overall, HITS is useful in gauging the the sepority of one round vs another in some aspects.

This said terminal ballistics is much more complicated. As a 223 ZMax will stop the average sized unarmored intruder better than the military 556 M855.

When its your familys saftey thats paramount or benovelevent hunting…Results matter. Future posts will help you make the best decision on which round is best.

 

 

 

Comments

comments

Leave a Reply