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Long Range Hunting & Shooting
MARK 4 2nd Focal Plane range estimation.
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<blockquote data-quote="5r milspec" data-source="post: 394338" data-attributes="member: 25154"><p>I think i read something about this topic before on here and if it already exists can somebody please redirect me so I am not beating a dead horse over again. Haha.</p><p> </p><p>I use a .308 5r milspec with a mark 4-4.5-14-50 sfp with the TMR. My question is about range estimation with this scope. My understanding is that at 14x, 1 mil reading is true in the reticle. I was wondering if this is correct of the other power settings. Please confirm or deny.</p><p> </p><p>14x 1 mil reticle reading = 1 mil</p><p>11x 1 mil reticle reading =1.27 mil</p><p>8x 1 mil reticle reading = 1.75 mil</p><p>5x 1 mil reticle reading = 2.8 mil</p><p>4.5x 1 mil reticle reading = 3.1 mil</p><p> </p><p>The formula i use is </p><p>taget in inches/36*1000 then divided my mils read= target distance in yards. I know the other formulas but this one is the one i use.</p><p> </p><p>So my example is this. 18 inch target reading 2.5 mils in reticle.</p><p>1) 18/36*1000=500</p><p>2) 2.5 mils in recticle * by 2.8mil (5x equivalent) = 7</p><p>3) 500/7=71 yards.</p><p> </p><p>So the 18 inch target will be approx. 71 yds away. Is this correct or am I making a mistake with the power readings. I also use a vortex viper ffp so ranging is not a problem at any power setting. I know the easy answer is get a range finder but thats taking the fun outta it. I have a follow up question with hold overs but i wanna make sure i am doing this right with the 2nd focal plane reticle. The vortex is on a target range .223 gun that doesnt see more than 200 yds use so i seldomly use it for range estimation. Please respond. thanks.</p></blockquote><p></p>
[QUOTE="5r milspec, post: 394338, member: 25154"] I think i read something about this topic before on here and if it already exists can somebody please redirect me so I am not beating a dead horse over again. Haha. I use a .308 5r milspec with a mark 4-4.5-14-50 sfp with the TMR. My question is about range estimation with this scope. My understanding is that at 14x, 1 mil reading is true in the reticle. I was wondering if this is correct of the other power settings. Please confirm or deny. 14x 1 mil reticle reading = 1 mil 11x 1 mil reticle reading =1.27 mil 8x 1 mil reticle reading = 1.75 mil 5x 1 mil reticle reading = 2.8 mil 4.5x 1 mil reticle reading = 3.1 mil The formula i use is taget in inches/36*1000 then divided my mils read= target distance in yards. I know the other formulas but this one is the one i use. So my example is this. 18 inch target reading 2.5 mils in reticle. 1) 18/36*1000=500 2) 2.5 mils in recticle * by 2.8mil (5x equivalent) = 7 3) 500/7=71 yards. So the 18 inch target will be approx. 71 yds away. Is this correct or am I making a mistake with the power readings. I also use a vortex viper ffp so ranging is not a problem at any power setting. I know the easy answer is get a range finder but thats taking the fun outta it. I have a follow up question with hold overs but i wanna make sure i am doing this right with the 2nd focal plane reticle. The vortex is on a target range .223 gun that doesnt see more than 200 yds use so i seldomly use it for range estimation. Please respond. thanks. [/QUOTE]
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MARK 4 2nd Focal Plane range estimation.
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