Precision Rifle EXTERIOR BALLISTICS Table



The task of preparing exterior ballistic data on all our bullets in all weights with all charges of powder is just too great to undertake. Instead, we offer the most common weight of each bullet using the standard charge of 100 grains of powder. The data is designed to serve as a comparison between bullets which will help the shooter select the best bullet for his hunting circumstance.

In browsing through, you will become aware that bullets with higher BC (ballistic coefficiency) shoot flatter and offer higher down range KE (kinetic energy). The trade off for higher BC is a more gradual release of KE. The hunter must determine which is of greater benefit for his particular hunting circumstance. Let's use the example of one of our hunting spots near the Red River. By late muzzleloader season, the river is treacherous; freezing water temperatures and fast current carrying large chunks of ice. In this particular spot, the deer use several river islands as their primary escape routes, either to avoid the standers while being pushed or to retreat once hit. Recovery of an animal, should they get to one of these islands, would be impossible. For that reason, this circumstance calls for instant, total release of KE to reduce the distance traveled after the shot, as much as possible. For this hunt, I always use the Ultimate 1 Keith Nose HP. I have harvested many deer with this bullet and have yet to have one go more than a few steps.

Conversely to that situation, there are the spots where White-tailed deer are feeding on farm crops and you know the shot will be 150+ yards. The deer will have to cover several hundred yards of open field before getting to cover therefore reducing the importance of "recovery distance". In this circumstance the shooter would gladly trade instant release of KE for a flatter trajectory. The Dead Center or QT Polymer Spitzer in .40, .44 and .45, EXTREME or the ULTIMATE 1 SPITZER are all perfect for this situation.

In closing I would like to say that these ballistics are offered as a reference only.
We suggest shooting your favorite load over the entire distance that you plan to hunt in 25 yard increments to determine your exact results.

Ballistic Coefficient determination:

For the purest, the term Ballistic Coefficient (BC) is a non finite number. In other words the BC is defendant on the velocity. As the velocity decreases, the BC increases. The ogive portion of the bullet has a greater effect on the BC while the bullet is supersonic while the base portion of the bullet has a greater effect on BC once the bullet is subsonic. As both are constantly changing, there actually is no exact number.

We use a combination of three methods to determine the BC that we publish. These are:

1. First we use a computer program that estimates the BC by describing the shape of the bullet. This is the same description that we give to the tool and die maker who makes our production tooling so the specs must be exact.

2. The second process we use is chronograph to chronograph velocity measurements. In order for this process to work, the first screens must be beyond the point where the sabot and bullet have separated and the bullets must be shot in a velocity range where the bullets do not deform in flight.

3. The third process is to shoot the bullets at distance to determine the actual drop. We generally shoot at 100, and 300 yards for this process.

The BC that we publish is based on a velocity of 1500 fps with a media density of 1.184 gm/L. Just as in baseball, the tie always goes to the bullet. In other words, we use the number that is the highest from the three processes above. What does it all mean anyway? Good question. A bullet traveling at 1850 fps sighted in at 100 yards with a BC of .2 will drop 1.2" more at 200 yards than a bullet with a BC of .25 and will drop 1.9" more than a bullet with a BC of .3. Bottom line is BC makes great conversation over the fire at hunting camp but for the vast majority of muzzleloader hunting circumstances, BC is a non issue.

We will continue to add data as time becomes available.
Thanks for your interest; just being here tells us that you are a conscientious and ethical shooter.


Last updated January 12th, 2003

Precision Rifle's Dead Center Exterior Ballistics
Test Conditions: January 12th, 2003 Temp: -32C Humidity: 53% Pressure: 101.2 kp Altitude: 864 feet above sea level
.357 Dead Center - 175 grain BC .342 - 100 gr. Triple Seven FFF - Kahnke 26" .50
Distance (yards) Muzzle 50 100 150 200 250 300
Velocity (fps) 2142 2025 1914 1808 1706 1611 1520
Kinetic Energy (ft lb) 1779 1593 1423 1270 1131 1008 898
Trajectory   2.3 4.0 3.3 0 -6.4 -16.0
.357 Dead Center - 175 grain - BC .342 - 100 gr. Triple Seven FFF - Kahnke 30" .45
Distance (yards) Muzzle 50 100 150 200 250 300
Velocity (fps) 2197 2080 1967 1858 1754 1656 1563
Kinetic Energy (ft lb) 1875 1680 1503 1342 1196 1065 949
Trajectory   2.1 3.8 3.1 0 -6.0 -15.1
.357 Dead Center - 195 grain - BC .375 - 120 gr. Triple Seven FFF - Winchester X150 .45
Distance (yards) Muzzle 50 100 150 200 250 300
Velocity (fps) 2290 2180 2073 1970 1871 1776 1684
Kinetic Energy (ft lb) 2270 2057 1861 1681 1515 1365 1228
Trajectory   1.8 3.3 2.8 0 -5.2 -13.3
.40 Dead Center - 200 grain - BC .300 - 110 gr. Triple Seven FFF - Winchester X150 .45
Distance (yards) Muzzle 50 100 150 200 250 300
Velocity (fps) 2144 2078 1888 1768 1655 1550 1451
Kinetic Energy (ft lb) 2041 1799 1582 1388 1217 1067 935
Trajectory   2.4 4.2 3.5 0 -6.7 -17.0
.40 Dead Center - 220 grain - BC .325 - 110 gr. Triple Seven FFF - Winchester X150 .45
Distance (yards) Muzzle 50 100 150 200 250 300
Velocity (fps) 2063 1945 1832 1724 1622 1527 1437
Kinetic Energy (ft lb) 2079 1848 1639 1452 1286 1139 1008
Trajectory   2.6 4.5 3.7 0 -7.0

-17.8

.40 Dead Center - 240 grain - BC .351 - 110 gr. Triple Seven FFF - CVA 26" .45
Distance (yards) Muzzle 50 100 150 200 250 300
Velocity (fps) 1995 1888 1785 1688 1595 1508 1426
Kinetic Energy (ft lb) 2121 1899 1699 1518 1356 1212

1083

Trajectory   2.8 4.7 3.9 0 -7.3 -18.5
.44 Dead Center - 260 grain - BC .327 - 110 gr. Triple Seven FF - Encore 25" .50
Distance (yards) Muzzle 50 100 150 200 250 300
Velocity (fps) 1930 1818 1712 1611 1517 1428 1345
Kinetic Energy (ft lb) 2150 1908 1691 1499 1328 1177 1044
Trajectory   3.1 5.2 4.3 0 -8.0 -20.4
.44 Dead Center - 300 grain - BC .371 - 110 gr. Triple Seven FF - Encore 25" .50
Distance (yards) Muzzle 50 100 150 200 250 300
Velocity (fps) 1880 1783 1691 1603 1520 1441 1367
Kinetic Energy (ft lb) 2354 2118 1904 1711 1539 1384 1244
Trajectory   3.3 5.4 4.4 0 -8.2 -20.4
.45 Dead Center - 300 grain - BC .336 - 110 gr. Triple Seven FF - Encore 25" .50
Distance (yards) Muzzle 50 100 150 200 250 300
Velocity (fps) 1880 1773 1672 1577 1487 1402 1323
Kinetic Energy (ft lb) 2354 2094 1862 1655 1472 1309 1166
Trajectory   3.4 5.5 4.5 0 -8.4 -21.3
.45 Dead Center - 340 grain - BC .376 - 110 gr. Triple Seven FF - Encore 25" .50
Distance (yards) Muzzle 50 100 150 200 250 300
Velocity (fps) 1795 1703 1616 1533 1455 1380 1311
Kinetic Energy (ft lb) 2432 2190 1971 1775 1598 1439 1298
Trajectory   3.7 5.9 4.8 0 -8.9 -22.4


Precision Rifle Bullets - Exterior Ballistics Table
.40 caliber BULLETS
.40 QT Spitzer Polymer Tip 195 grain - 120 grains Pyrodex P - BC .268 - .45 caliber sabot
Distance (yards) Muzzle 25 50 75 100 125 150 175 200 225 250
Velocity (fps) 2150 2076 2003 1933 1864 1797 1732 1669 1609 1551 1495
Kinetic Energy (ft lb) 2001 1865 1737 1617 1504 1398 1298 1206 1120 1041 967
Trajectory - .1 1.3 1.9 1.9 1.3 0 -2.0 -4.8 -8.4 -13.0
.40 QT Spitzer Polymer Tip 195 grain - 110 grains powder - BC .268
Distance (yards) Muzzle 25 50 75 100 125 150 175 200 225 250
Velocity (fps) 2000 1929 1861 1794 1729 1666 1606 1548 1492 1438 1386
Kinetic Energy (ft lb) 1732 1612 1499 1393 1294 1202 1117 1038 964 896 832
Trajectory - .4 1.6 2.3 2.3 1.5 0 -2.4 -5.7 -9.9 -15.2
.40 QT Spitzer Polymer Tip 215 grain - 110 grains powder - BC .319
Distance (yards) Muzzle 25 50 75 100 125 150 175 200 225 250
Velocity (fps) 1900 1843 1787 1732 1679 1628 1579 1531 1484 1439 1395
Kinetic Energy (ft lb) 1723 1620 1523 1432 1347 1265 1189 1118 1052 988 929
Trajectory - .5 1.8 2.5 2.5 1.6 0 -2.5 -6.0 -10.4 -15.9
.40 QT Spitzer Polymer Tip 235 grain - 110 grains powder - BC .344
Distance (yards) Muzzle 25 50 75 100 125 150 175 200 225 250
Velocity (fps) 1800 1749 1700 1652 1605 1559 1515 1472 1431 1390 1351
Kinetic Energy (ft lb) 1690 1596 1507 1423 1344 1269 1198 1131 1068 1008 953
Trajectory - .7 2.1 2.8 2.8 1.8 0 -2.8 -6.5 -11.4 -17.3
.45 caliber BULLETS
KEITH NOSE .45 HP - 330 grain - 100 grains powder - BC .179
Distance (yards) Muzzle 25 50 75 100 125 150 175 200 225 250
Velocity (fps) 1550 1467 1388 1315 1249 1191 1142 1100 1064 1032 1003
Kinetic Energy (ft lb) 1760 1576 1412 1267 1143 1039 955 886 829 780 737
Trajectory 0 1.1 2.6 3.1 2.2 0 -3.8 -9.2 -16.4 -25.4 -36.5
EXTREME HP - 330 grain - 100 grains powder - BC .253
Distance (yards) Muzzle 25 50 75 100 125 150 175 200 225 250
Velocity (fps) 1550 1491 1434 1379 1327 1279 1234 1193 1157 1126 1097
Kinetic Energy (ft lb) 1760 1628 1506 1393 1290 1198 1163 1043 982 928 882
Trajectory 0 .9 2.4 2.8 2.0 0 -3.3 -8.1 -14.4 -22.3 -31.9
LONG RANGE EXAMPLES
.40 QT Polymer Tip - 195 grain - .45 caliber sabot - 120 grains Pyrodex P - BC .268
Distance (yards) Muzzle 50 100 150 200 250 300 350 400 450 500
Velocity (fps) 2150 2003 1864 1732 1609 1495 1388 1292 1209 1142 1087
Kinetic Energy (ft lb) 2001 1738 1504 1298 1120 968 835 723 633 564 512
Trajectory 0 2.5 4.3 3.6 0 -7.0 -17.8 -33.2 -53.8 -80.4 -114
.40 QT Polymer Tip - 195 grain - 150 grains powder - BC .268
Distance (yards) Muzzle 50 100 150 200 250 300 350 400 450 500
Velocity (fps) 2300 2146 2000 1860 1729 1606 1492 1386 1290 1207 1140
Kinetic Energy (ft lb) 2290 1994 1732 1499 1294 1116 964 832 721 631 563
Trajectory 0 2.0 3.6 3.1 0 -6.0 -15.3 -28.6 -46 -70 -98
.40 QT Polymer Tip - 215 grain - 150 grains powder - BC .319
Distance (yards) Muzzle 50 100 150 200 250 300 350 400 450 500
Velocity (fps) 2200 2074 1954 1838 1728 1624 1527 1435 1349 1272 1204
Kinetic Energy (ft lb) 2310 2054 1822 1613 1425 1259 1112 983 869 773 692
Trajectory 0 2.2 3.8 3.2 0 -6.1 -15.5 -28.7 -46 -68 -96
.40 QT Polymer Tip - 235 grain - 150 grains powder - BC .344
Distance (yards) Muzzle 50 100 150 200 250 300 350 400 450 500
Velocity (fps) 2050 1939 1832 1730 1634 1542 1456 1375 1301 1234 1176
Kinetic Energy (ft lb) 2193 1962 1751 1562 1393 1241 1107 987 883 794 721
Trajectory 0 2.3 4.0 3.3 0 -6.3 -15.9 -29.0 -47 -70 -98
.40 QT Polymer Tip - 250 grain - 150 grains powder - BC .356
Distance (yards) Muzzle 50 100 150 200 250 300 350 400 450 500
Velocity (fps) 2214 2101 1991 1886 1785 1689 1598 1511 1430 1353 1283
Kinetic Energy (ft lb) 2721 2449 2201 1974 1768 1583 1416 1268 1135 1016 913
Trajectory 0 2.6 3.6 3.0 0 -5.7 -14.6 -26.8 -43 -63 -88
.44 QT Polymer Tip - 250 grain - 150 gr. powder - BC .251
Distance (yards) Muzzle 50 100 150 200 250 300 350 400 450 500
Velocity (fps) 2140 1984 1837 1698 1569 1451 1341 1246 1166 1104 1052
Kinetic Energy (ft lb) 2542 2185 1872 1600 1367 1168 999 861 755 676 615
Trajectory 0 2.6 4.4 3.7 0 -7.3 -18.7 -34.9 -56.8 -85 -120
.44 QT Polymer Tip - 300 grain - 150 gr. Powder - BC .300
Distance (yards) Muzzle 50 100 150 200 250 300 350 400 450 500
Velocity (fps) 2000 1875 1756 1644 1540 1442 1350 1268 1196 1138 1089
Kinetic Energy (ft lb) 2664 2342 2054 1801 1579 1384 1213 1071 953 862 790
Trajectory 0 2.9 4.9 4.1 0 -7.7 -19.6 -36.4 -58.5 -87 -122
.45 QT Polymer Tip - 330 grain - 150 gr. Powder - BC .295
Distance (yards) Muzzle 50 100 150 200 250 300 350 400 450 500
Velocity (fps) 1900 1778 1663 1555 1454 1360 1276 1202 1141 1091 1049
Kinetic Energy (ft lb) 2645 2315 2025 1772 1550 1356 1193 1058 955 873 806
Trajectory 0 3.4 5.6 4.6 0 -8.7 -22.1 -40.9 -65.7 -97 -136

WARNING
The above loads in this chart are offered for theoretical comparison purposes only and are not suggested to be safe nor is their use advocated. Always check with your firearms manufacturer before selecting a load.

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