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Range Estimation for veriable power mil dot scope
Discussions related to Guns and Firearms
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eaglesnester
Rookie Member
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Joined: Jan 22, 2008
Posts: 22
Location: Northern Interior B.C. Canada

PostPosted: Sun Mar 13, 2011 3:16 pm    Post subject: Re: Range Estimation for veriable power mil dot scope Reply with quote

slimjim wrote:
Many high magnification variable-power scopes have their "mil-setting" below maximum magnification. My 2.5 to 16 power Bushnell is set at 10x. A fixed 10x was the standard for snipers for many years. An advantage of not having the mil-setting at high powers is to avoid the affects of heat shimmer during hot conditions. A second advantage occurs when you use your mil-dot for ballistic drop compensation and you have a flat shooting rifle. You can adjust magnification above the mil-setting to tune to the flatter trajectory. My .270 with 130gr GMX and scope set on 11.5x gives me 100 yd zero, 300 yards at the first mil-dot, 400 at the second dot, 500 yards at the 3th, and 600 yards POI at the 4th mil-dot.
This makes since to me as I have had some trouble with mirage on warm days shooting at 500 meters. I use a Leica 1200 rangefinder because of this and do not use my TMR to mill distance to target.
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stovepipe
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Joined: Sep 25, 2008
Posts: 4678
Location: Pine, Az.

PostPosted: Mon Mar 14, 2011 6:08 am    Post subject: Re: Range Estimation for veriable power mil dot scope Reply with quote

mirage affects poi, not range. also, depends on where mirage is. close, mid, at target or from barrel.

hoods help- longer the better and anything goes there to keep barrel heat at bay. seen some interesting homebrewed stuff.

for range mirage splitting mag-power in half and necking down objective w/ a slit playing card or tape helps. you wouldnt belive the mirage i have at my high power range when it gets 100#f and more. rather have wind than mirage anyday. i can dope for wind. mirage is a crapshoot. i stop once it gets really bad untill the wind comes up.

i miss high power bad. few more months and GTG. yay! Razz
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