Help w/ .308 trajectory.....bullet drop?


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skipbo32
August 25, 2010, 01:40 PM
can anyone tell be the difference in ballistics of the 150 grain .308 and the 168 grain .308? or tell me where i can get a trajectory table to learn the difference? the reason i ask is because i have a leupold mk 4 w/ a bullet drop dial marked for a 168 grain bullet....but i shoot a 150 grain.

i would imagine that the dial would start to be inaccurate after about 300yds since a 168 grain drops faster than my 150 grain.

or should i just use the dial with the marks that it has regardless of the different grain? is a 168 that much different than a 150 grain?

any help would be great, thanks.


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Zak Smith
August 25, 2010, 02:22 PM
Your Leupold has clicks that are probably 1 MOA (if it's a Mark 4 - M3 model). You can run the ballistics on any of the free ballistic calculators- I recommend JBM Online. You can always run the drop data directly and dial the corresponding MOA on the dial itself. The 150 will be a little bit off from 168, but both are probably somewhat off on your gun due to barrel and geometry differences.

rcmodel
August 25, 2010, 05:21 PM
Duplicate thread here:

http://www.thehighroad.org/showthread.php?p=6701265#post6701265

rc

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