CALIBRE
*BC
RANGE (yards)
0
100
200
300
400
500
600
0.390
MUZZLE VELOCITY (fps)
3000
2720
2460
2210
1980
1760
1560
ENERGY (ft lb)
1380
1135
925
750
600
475
375
+1.6
Zero
-7.4
-21.9
-45.3
-79.8
.223 Remington 69 gr BT HP
**TRAJECTORY (inches) .308 Winchester 168 gr BT HP
0.462
MUZZLE VELOCITY (fps)
2600
2420
2240
2070
1910
1760
1610
ENERGY (ft lb)
2520
2180
1870
1600
1355
1150
970
+2.2
Zero
-9.15
-26.5
-53.3
-91.5
**TRAJECTORY (inches) .300 Win Mag 190 gr BT HP
0.533
MUZZLE VELOCITY (fps)
2900
2725
2557
2395
2239
2089
1944
ENERGY (ft lb)
3547
3133
2758
2420
2115
1840
1595
+1.5
Zero
-6.8
-20.0
-40.0
-67.5
**TRAJECTORY (inches) .338 Lapua Mag 250 gr Lock Base
0.660
MUZZLE VELOCITY (fps)
2953
2810
2671
2537
2406
2280
2157
ENERGY (ft lb)
4842
4384
3962
3573
3215
2886
2583
+1.4
Zero
-6.3
-18.1
-35.8
-60.2
**TRAJECTORY (inches) *BC – Ballistic Coefficient **Rifle sighted in a 200 yards Table 1
CALIBRE
*BC
RANGE (yards)
0
100
200
300
400
500
600
0.390
% RETAINED MUZZLE VELOCITY
3000
90,6
82,0
73,7
66,0
58,7
52,0
% RETAINED MUZZLE ENERGY
1380
82,0
67,0
54,3
43,5
34,4
27,1
+1.6
Zero
-7.4
-21.9
-45.3
-79.8
.223 Remington 69 gr BT HP
**TRAJECTORY (inches) .308 Winchester 168 gr BT HP
0.462
% RETAINED MUZZLE VELOCITY
2600
93,1
86,2
79,6
73,5
67,7
61,9
% RETAINED MUZZLE ENERGY
2520
86,5
74,2
63,5
53,8
45,6
38,5
+2.2
Zero
-9.15
-26.5
-53.3
-91.5
**TRAJECTORY (inches) .300 Win Mag 190 gr BT HP
0.533
% RETAINED MUZZLE VELOCITY
2900
93,9
88,2
82,6
77,2
72,0
67,0
% RETAINED MUZZLE ENERGY
3547
88,3
77,8
68,2
59,6
51,9
45,0
+1.5
Zero
-6.8
-20.0
-40.0
-67.5
**TRAJECTORY (inches) .338 Lapua Mag 250 gr Lock Base
0.660
% RETAINED MUZZLE VELOCITY
2953
95,2
90,5
85,9
81,5
77,2
73,0
% RETAINED MUZZLE ENERGY
4842
90,5
81,8
73,8
66,4
59,6
53,3
+1.4
Zero
-6.3
-18.1
-35.8
-60.2
**TRAJECTORY (inches)
Table 2: A comparison of the retained velocity and energy in sniper bullets 26 | AFRICAN EXPEDITION MAGAZINE March 2009