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.
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 |
.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 |