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I am going to WY to shoot some prairre dogs and I am borrowing my bosses AR-50 I need to know the MV of lake city 660 gr. and the BC if you know it Thanks
+1 <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RATOUTAHELL</div><div class="ubbcode-body">MV will be about 2920 fps and ballistic coeficient is around .670 at that velocity. Have fun!</div></div>
that stuff is kind of inconsistent though. Have heard that mv's fluctuate a lot.
The velocities given were stated from Lake City. BC is standard M33 ball. I know the Barrett M33 ammo that I shoot from my 50 runs about 2800 but I was going off the the info from Lake City.
The Lake City number is based off a muzzle velocity on a 45" M2 MG barrel. The 29" barrel on the AR-50 or any other bolt gun will be significantly lower as JimmyM40a2 stated, and will probably be a little slower than the Barrett ammo which is pretty hot.