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Estimating Distance W/MIL DOT Fixed vs Variable |
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Ranger007
Optics GrassHopper Joined: January/23/2011 Location: MA Status: Offline Points: 4 |
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Posted: February/03/2011 at 12:32 |
I am a novice shooter and tried to find the answer and so far no one can give a logical answer that makes any sense. So this you could say is a last resort and depending how this goes could be a first resort from here on out.
First let me explain some issues that have lead me to ask this question.
I am running a REM 700 SPS short action chamber in .308 WIN. with a SS 16x42 Fixed MIL DOT. Yes I know that the optic is a little much for the rifle but so far it does exactly what I want it to do.
My question is and please forgive me if a fudge the correct terms etc. If I am using the optic referenced above to estimate distance to the target how does a variable power scope affect range estimation? Meaning if I estimate my range to the target to be 150 yards in a X3 magnification and I then zoom in to the target on say 10 power the MIL DOT recticle does not change? Is that correct? If it is correct and the rectilce does not change how does one know what power to be at in order to estimate range estimation?
I am asking this question becuse the people at MIL DOT Master can not answer this.
Any info/assistance would be greatly appreciated.
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Ranger007
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SVT_Tactical
MODERATOR Chief Sackscratch Joined: December/17/2009 Location: NorthCackalacky Status: Offline Points: 31233 |
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Variables with SFP will have a certain power in which the mildots are true, normally posted in an owners manual or somewhere. However FFP scopes are true on all powers.
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Urimaginaryfrnd
MODERATOR Resident Redneck Joined: June/20/2005 Location: Iowa Status: Offline Points: 14964 |
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Most scopes use the highest power as the correct power to mil dot rangefind which makes sense because that allows you to more accurately estimate tenths of a mil. Some manufacturers use a specific power as the correct one to mil at like 12x which Bushnell seems to like. Recently we have been seeing some first focal plane scopes which will mil rangefind at any power and as you zoom from low power to high power the reticle grows larger in appearance but the dots are always one mil apart. The traditional style second focal plane scopes the reticle always appears to stay the same size.
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"Always do the right thing, just because it is the right thing to do". Bobby Paul Doherty Texas Ranger |
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Ranger007
Optics GrassHopper Joined: January/23/2011 Location: MA Status: Offline Points: 4 |
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Thank you very much Urimaginaryfrnd and SVT_Tactical!!!!!!!!
I am tracking.
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Ranger007
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jonoMT
Optics Master Extraordinaire Joined: November/13/2008 Location: Montana Status: Offline Points: 4853 |
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To expand on that, let's look at three examples: 1) Your 16x fixed-power scope, 2) a variable FFP scope and 3) a variable SFP scope. In all three cases, we'll range a target 12" in size @ ~150 yards.
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Reaction time is a factor...
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Ranger007
Optics GrassHopper Joined: January/23/2011 Location: MA Status: Offline Points: 4 |
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Excellent. I am tracking and I actualky understand it too. Thank you all very much greatly appreciated! Ho-Ah!!
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Ranger007
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