almiz111 26 Posted May 1, 2011 This is AK specific so I feel it belongs here not in optics or rifles. I'm guessing I'll get a bunch of answers some of which I will understand. LOL. Say I zero with iron at 25 and get typical ballistics 25/0, 100/+4?, 200/0. All is wonderful. If those are not typical then what is??? Now I add a scope. Where should I zero - 25, 100?? Objective is to hit approx. 8 inch target from 25 to 200 with no hold over/under. Also want to understand relation of scope height above bore to resulting ballistics. Thanks you all. Quote Share this post Link to post Share on other sites
vladtepes 1,060 Posted May 1, 2011 I am no ballistics expert but when Glen was explaining things to me you need a lot of data about the actual round... weight.. ballistic coefficient.. etc... my red dot on AK is set to 100 yards.. it is close enough to provide COM hits 0 - 100 pretty easily... from 150-200 it gets harder.. but that is a red dot with no magnification.. Quote Share this post Link to post Share on other sites
Pew Pew Plates 358 Posted May 1, 2011 Here you go. http://www.hornady.com/ballistics-resource/ballistics-calculator Input all your data into that and set it how you would like. You put in your 0 distance and it will tell you drop (or raise) at the distances you choose. To find your BC (ballistic coeffecient) just google your particular round/bullet + BC or ballistic coeffecient and you will probably find it. You can also input the variable of sight/scope height. I just threw some quick numbers together, wolf 122 grain HP in 7.62x39 with a 25 yard 0 will yeild you 100 yards +2.1", 200 yards is -2.2" using a BC of 0.2573 and 2,444 for velocity 2 Quote Share this post Link to post Share on other sites
almiz111 26 Posted May 2, 2011 Here you go. http://www.hornady.com/ballistics-resource/ballistics-calculator Input all your data into that and set it how you would like. You put in your 0 distance and it will tell you drop (or raise) at the distances you choose. To find your BC (ballistic coeffecient) just google your particular round/bullet + BC or ballistic coeffecient and you will probably find it. You can also input the variable of sight/scope height. I just threw some quick numbers together, wolf 122 grain HP in 7.62x39 with a 25 yard 0 will yeild you 100 yards +2.1", 200 yards is -2.2" using a BC of 0.2573 and 2,444 for velocity Thanks Glen and Vlad. That Hornady site looks good. In the meanwhile I also found Spot On at Nikon Hunting and also a ballistics calc. at the Winchester site. What I seem to be discovering is that scope height makes a big difference in where the bullet hits. Quote Share this post Link to post Share on other sites
Pew Pew Plates 358 Posted May 2, 2011 Yes, sight height is going to affect where your zeroes are http://www.rifleshootermag.com/shooting_tips/ballistics_0303/ Quote Share this post Link to post Share on other sites
Ray Ray 3,566 Posted May 2, 2011 This threads title is funny, tehe!! Quote Share this post Link to post Share on other sites