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Downrange energy

 
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  #1  
Old 12-15-2004, 02:54 PM
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Join Date: Dec 2004
Posts: 5
Downrange energy

Guys, I have to ask, what calibers are you using for 2000 yard elk hunting? The charts I have only go to 500yds max. My max is 300 yards on a no wind day so this is more out of curiousity than anything else.
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  #2  
Old 12-15-2004, 06:38 PM
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Join Date: May 2001
Posts: 2,369
Re: Downrange energy

Most of the Ultra Long Range guys are over on www.wildcatshooting.com but I believe they use 338's for the real long range stuff. Best to get the information first hand though. Darryl Cassel would be the guy to look up over there.

I just checked over there and Darryl has a post about this year's elk hunt.

http://www.wildcatshooting.com/forum...pic.php?t=1049
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  #3  
Old 12-16-2004, 01:33 AM
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Re: Downrange energy

thanks
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  #4  
Old 12-16-2004, 05:06 AM
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Join Date: Dec 2004
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Re: Downrange energy

I finally found a chart that goes that far or rather a calculator and I was looking at the 338RUM. It drops below 1500fpe at 650yds. I always thought 1500fpe was the minimum for elk. Like I said, just curious. 650yds is a long way for me. I can't do it. My dad could, though.
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  #5  
Old 12-16-2004, 05:31 AM
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Join Date: May 2001
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Re: Downrange energy

For Ultra Long Range folks will be using the 300 Sierra MatchKing.

Heres some data for a 338RUM at 2900fps with a Sierra 300 MK...

Sea level, temp 59

<font class="small">Code:</font><hr /><pre>
Yards Speed Energy
1000 1851 2282
1050 1806 2172
1100 1762 2067
1150 1719 1968
1200 1676 1870
1250 1634 1778
1300 1593 1690
1350 1553 1606
1400 1514 1526
1450 1475 1449
1500 1438 1377
1550 1403 1311
1600 1368 1246
1650 1335 1187
1700 1304 1132
1750 1273 1079
1800 1243 1029
1850 1216 984
1900 1189 941
1950 1165 904
2000 1142 868

</pre><hr />


Heres the data for 6000' Above Sea Level (ASL) at 40 Degrees

<font class="small">Code:</font><hr /><pre>
Yards Speed Energy
1000 2009 2688
1050 1969 2582
1100 1930 2481
1150 1891 2381
1200 1853 2287
1250 1815 2194
1300 1778 2105
1350 1742 2021
1400 1706 1938
1450 1671 1859
1500 1636 1782
1550 1602 1709
1600 1568 1637
1650 1535 1569
1700 1502 1502
1750 1470 1439
1800 1440 1381
1850 1410 1324
1900 1382 1272
1950 1354 1221
2000 1327 1172

</pre><hr />

Here's what the big wildcats would be like... muzzle speed of about 3100fps. 6000' ASL, 40 degrees

<font class="small">Code:</font><hr /><pre>

Yards Speed Energy
1000 2171 3139
1050 2129 3019
1100 2088 2903
1150 2047 2790
1200 2007 2682
1250 1967 2577
1300 1928 2475
1350 1889 2376
1400 1851 2282
1450 1813 2189
1500 1776 2100
1550 1740 2016
1600 1704 1934
1650 1669 1855
1700 1635 1780
1750 1600 1705
1800 1567 1635
1850 1534 1567
1900 1501 1500
1950 1469 1437
2000 1439 1379


</pre><hr />
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  #6  
Old 12-16-2004, 08:49 AM
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Join Date: Dec 2004
Posts: 5
Re: Downrange energy

Ok, mine is way different. A 250g swift at 2860 (factory Rem) is 789fpe at 1000 yards. With the MK 300g (BC of .587) at 2900 is still only 1600fpe at 1000 yards. Anyway, thanks for the info. Like I said, I'll never be concerned myself. I just started hearing about this ultra long range elk hunting and thought I'd see what was being used. I'd hate to be on either end of a rifle that has 1500fpe at 2000 yards.
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  #7  
Old 12-16-2004, 09:21 AM
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Join Date: May 2001
Posts: 2,369
Re: Downrange energy

The published BC on the Swift A-Frame is .427.

Here's 2860fps at sea-level 59 degrees with the Swift A-Frame.

<font class="small">Code:</font><hr /><pre>

Yards Speed Energy
0 2860 4540
50 2751 4200
100 2644 3880
150 2541 3583
200 2439 3301
250 2340 3039
300 2243 2792
350 2149 2563
400 2056 2346
450 1966 2145
500 1878 1957
550 1793 1784
600 1712 1626
650 1633 1480
700 1557 1345
750 1483 1220
800 1415 1111
850 1351 1013
900 1291 925
950 1235 846
1000 1186 780
1050 1141 722
1100 1102 674
1150 1068 633
1200 1038 598
1250 1012 568
1300 988 541
1350 966 517
1400 946 496
1450 927 476
1500 909 458
1550 893 442
1600 877 426
1650 862 412
1700 847 398
1750 833 385
1800 819 372
1850 806 360
1900 794 349
1950 781 338
2000 769 328

</pre><hr />

The published BC on a Sierra MatchKing 300 is .768 not .587

Here's sea-level at 2900 fps 59 degrees

<font class="small">Code:</font><hr /><pre>

Yards Speed Energy
0 2900 5601
50 2838 5364
100 2777 5136
150 2718 4920
200 2659 4709
250 2601 4506
300 2543 4307
350 2486 4116
400 2430 3933
450 2375 3757
500 2320 3585
550 2267 3423
600 2213 3262
650 2161 3110
700 2109 2962
750 2058 2821
800 2008 2685
850 1958 2553
900 1909 2427
950 1860 2304
1000 1813 2189
1050 1767 2079
1100 1722 1975
1150 1678 1875
1200 1634 1778
1250 1592 1688
1300 1550 1600
1350 1509 1516
1400 1468 1435
1450 1431 1363
1500 1394 1294
1550 1359 1230
1600 1325 1169
1650 1292 1111
1700 1260 1057
1750 1229 1006
1800 1202 962
1850 1176 921
1900 1151 882
1950 1128 847
2000 1107 816

</pre><hr />


The real BC for the SMK 338 300 is closer to .800 so the earlier numbers reflect the better BC.
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