I think

September 28 2017 at 11:57 AM
Mark  (Login TwiceHorn)
YF12


Response to Lol, good one. NT

What Hector is driving at is finding the source and degree of point of impact shift from your scope rather than advocating knowledge of the precise mathematics of your scope clicks and mildots for any other purpose.

On the 40 click thing, he suggests figuring out how much your crosshair actually moves over 40 clicks and dividing that distance by 40 to determine whether your clicks really are 1/4MOA or 1/8MOA or otherwise. Do this at 40 degrees and again at 80 and you have an idea what kind of contribution temperature makes to your POI shift, if you are clicking as in WFTF or Open.

Same basic idea with the mildots for Hunter. Figure out what they actually span or subtend.

As Bob notes, none of this is necessary or even particularly helpful to generate a good holdover chart. Actually shooting the distance and noting the drop, measured by whatever your dots or hashes or other stadia gives you is the way to go, if you have the distances to shoot. Same for bracketing to range targets. Doing it at different ambient temperatures would seem to be the key to figuring out temperature-dependent POI shifts. But, without doing what Hector suggests, you won't know what your scope's contribution to the shift is.

Or I could be completely wrong. That's never happened before.

 
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On line trajectory calc by Brad Troyer MILDOTS

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