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Possible POSITIVE error on my Nikon 4-16x50

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Southernfryedyankee View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Southernfryedyankee Quote  Post ReplyReply Direct Link To This Post Topic: Possible POSITIVE error on my Nikon 4-16x50
    Posted: June/06/2009 at 17:45
I just eye bore sighted my rifle at approx 25-30 yds to get the crosshairs to match up with my bore at a specific target. Nikons website states this scope has 40 MOA internal adjustment but after going through all the clicks I had after eye sighting I have an additional 44 clicks up elevation to shoot at further targets and an additional 15 clicks down elevation which brings me closer to 60 MOA elevation. I would imagine that is a good thing right or did I possibly do something wrong. I have not tested the windage adjustment to see if it the same. Have companies been known to make errors like this before. I DID buy my scope from a reputable Nikon dealer. This is from Nikons website. If this is a mistake on their part I am very happy. What kind of range can I get with a 7mm rem mag 140g TSX with 43+- MOA
 
 
Actual Magnification 4x-16x
Effective Objective Diameter 50mm
Exit Pupil (mm) 12.5-3.1
Eye Relief (in.) 4.0-3.7
FOV at 100 yds (ft.) 25.2-6.3
Tube Diameter 1 in. (25.4mm)
Objective O.D. (mm/in) 57.3/2.26
Eyepiece O.D. (mm/in) 44/1.73
Length (in) 14.7
Weight (oz) 19.4
Adjustment Graduation (1 click) 1/4 MOA
Max Internal Adjustment 40 MOA
Parallax setting (yds) 50 - ∞
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Urimaginaryfrnd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Urimaginaryfrnd Quote  Post ReplyReply Direct Link To This Post Posted: June/06/2009 at 18:07
http://www.eskimo.com/~jbm/cgi-bin/jbmtraj-5.0.cgi  Here you go plug in the balistic coeffecient of the bullets etc and  have fun.

"Always do the right thing, just because it is the right thing to do".
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Southernfryedyankee View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Southernfryedyankee Quote  Post ReplyReply Direct Link To This Post Posted: June/06/2009 at 18:09
Someone else referred me to that website and I didnt know how to use it. I will study it a little harder and try to figure it out. Any opinions about my other issue
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Southernfryedyankee View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Southernfryedyankee Quote  Post ReplyReply Direct Link To This Post Posted: June/06/2009 at 18:33
IIIIIIIIIF I actually did this right which I may have been off on a few things (elevation, scope height, avg temperature, zero elevation etc etc), this was the table I was given
 
The load is a black hills 140g barnes TSX 7mm rem mag
velocity 3150, energy 3084
B.C .394
 
Does that sound possible?
 
 
150 -2.0 -0.5 0.0 0.0 2789.5 2.484 2418.5 0.152 0.0 0.0
200 -5.2 -1.3 0.0 0.0 2675.7 2.383 2225.1 0.207 0.0 0.0
250 -9.1 -2.2 0.0 0.0 2564.7 2.284 2044.4 0.264 0.0 0.0
300 -13.5 -3.2 0.0 0.0 2456.4 2.188 1875.4 0.324 0.0 0.0
350 -18.2 -4.4 0.0 0.0 2350.7 2.093 1717.5 0.386 0.0 0.0
400 -23.4 -5.6 0.0 0.0 2247.6 2.002 1570.2 0.451 0.0 0.0
450 -28.9 -6.9 0.0 0.0 2147.0 1.912 1432.8 0.520 0.0 0.0
500 -34.8 -8.3 0.0 0.0 2049.0 1.825 1304.9 0.591 0.0 0.0
550 -41.2 -9.8 0.0 0.0 1953.7 1.740 1186.4 0.666 0.0 0.0
600 -48.0 -11.5 0.0 0.0 1861.2 1.657 1076.7 0.745 0.0 0.0
650 -55.3 -13.2 0.0 0.0 1771.7 1.578 975.6 0.828 0.0 0.0
700 -63.2 -15.1 0.0 0.0 1685.4 1.501 882.9 0.914 0.0 0.0
750 -71.6 -17.1 0.0 0.0 1602.6 1.427 798.3 1.006 0.0 0.0
800 -80.7 -19.3 0.0 0.0 1523.6 1.357 721.5 1.102 0.0 0.0
850 -90.5 -21.6 0.0 0.0 1448.7 1.290 652.3 1.203 0.0 0.0
900 -101.0 -24.1 0.0 0.0 1378.3 1.227 590.4 1.309 0.0 0.0
950 -112.3 -26.8 0.0 0.0 1312.8 1.169 535.7 1.420 0.0 0.0
1000 -124.6 -29.7 0.0 0.0 1252.7 1.116 487.8 1.537 0.0 0.0
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Oldtrader3 Quote  Post ReplyReply Direct Link To This Post Posted: June/06/2009 at 19:54
I would take these tables with a grain of salt until you can chronograph the Black Hills ammunition.  The 7mm Mag published ballistics are usually somewhat optimistic on velocity.  Plus most riflemen sight-in their 7mm Mags at 200 yards.  Then with these adjusted numbers, drop, velocity and energy figures become more relevent.
CDR3
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