Re: 16" .308 loads
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ConfederateWolf</div><div class="ubbcode-body">OK here's ANOTHER ammo question , but I'm directing it to the 16" .308................
Was told by DTA that they are running the 167 lapua scenar and the 168 sierra match king. Are there any other rounds that have better ballistics that would out preform these rounds with-in a 600 yard distance?
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I opened
this topic in the reloading section. Thanks to the high twist rate you can run any .30" on the market at full power. (Subsonic you'll probably find the 220gr SMKs are at the upper limit of stability.)
It is worth noting that at 500 yards and beyond the heavier the bullet the more retained energy you'll have, and the less wind drift (all, of course, due to higher B.C.). Here are estimates from the 16" bbl, assuming each is loaded with Win748 to a peak pressure of 55kpsi:
<div class="ubbcode-block"><div class="ubbcode-header">Code:</div><div class="ubbcode-body ubbcode-pre" ><pre>
SMK Muzzle 500-yard-------------------------------
grs fps fps ft-lbs Drop" 10mph" Time (s)
150 2630 1613 867 65.7 27.6 0.725
168 2490 1590 944 72 26.8 0.753
180 2390 1605 1030 75 24.5 0.765
200 2260 1591 1125 82 22.5 0.79
220 2140 1540 1157 90 22.2 0.825
240 2030 1480 1168 100 22.3 0.864
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