The Winchester Ballistic Advantage

A term cited repeatedly in this book is "ballistic advantage," the great benefit you have over potential opponents due to your .308's performance. I coined this term so snipers could cleariy understand that at ranges beyond about 400 yards, their rifles are inherendy more accurate, more powerful, and more lethal than the assault rifles carried by their adversaries. At shorter ranges, an assault rifle's large magazine capacity and high rate of fire give an opponent the advantage.

BALLISTIC COMPARISON: .223 vs. .308

FOOT-POUNDS OF KINETIC ENERGY

Distance in Yards

Muzzle

200

400 600

800

1000

.223 69 gr. Match

1380

925

475 375

235

170

.308 175 gr. Match

2625

1975

1460 1060

765

560

BULLET DRIFT IN 10 MPH CROSSWIND

Distance in Yards

100

200

400 600

800

1000

.223 69 gr. Match

0.9"

3.7"

16.3" 41.3"

82.2"

140"

.308 175 gr. Match

0.6"

3.0"

12.7" 31.4"

60.1"

101 "

BULLET VELOCITY

Distance in Yards

Muzzle

200

400 600

800

1000

.223 69 gr. Match

3000

2460

1980 1560

1240

1060

.308 175 gr. Match

2600

2260

1940 1650

1400

1200

TRAJECTORY FOR 100-YARD ZERO

Distance in Yards

100

200

400 600

800

1000

.223 69 gr. Match

Zero

-3.2"

-28.3" -89.4"

-207"

-405"

.308 175 gr. Match

Zero

-4.5"

-34.9" -103"

-222"

-415"

Therefore, think of yourself as a long-armed boxer who keeps your foe at arm's length, where you can pound him and exploit this great advantage. Equall}', realize that allowing your foe to come within close range brings mortal danger.

Since this is an advantage inherent with the ballistics of these respective rounds, let's examine these relationships exactly. Our first data box compares ,308 Federal Match bullet energy against the energy of Soviet Type PS 7.62mm 123-grain and 5.45mm 53-grain rounds fired from an AKM assault rifle. (A foot-pound is the amount of energy needed to lift 1 pound, 1 foot.)

From the muzzle, the .308 has approximately two times the energy of its competitors—meaning it will strike with twice the force, penetrate media to about twice the depth, and so on. But as we go farther out, the advantage of the .308's heavier boat-tail bullet actually becomes even greater. By the time we're at 600 yards, it's hitting with about four limes the force. To keep this in perspective,

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Hunting Mastery Selected Tips

Hunting Mastery Selected Tips

Deer hunting is an interesting thing that reminds you of those golden old ages of 19th centuries, where a handsome hunk well equipped with all hunting material rides on horse searching for his target animal either for the purpose of displaying his masculine powers or for enticing and wooing his lady love.

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