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Posted: 3/15/2012 1:07:14 PM EDT
| which is the best way for zero a 100 yrd zero or a zero @ 200yrd . where will the bullet impact at 25yrd with either on of these ?I with a .223 |
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http://www.ar15.com/forums/t_3_18/328143_RIBZ_____Revised_Improved_Battlesight_Zero__now_with_down_loadable_50_yard_zeroing_target_.html
read through that thread it will give you all the info you need in the first post. pick your 0 and go from there. I like the 50/225ish zero. |
| I used the 50yrd ribz for my irons. but I just bought a leupold scope with with the cps dials they wanting to no what aim going to use on the dials . so if i say 225yrd that will be my first mark wich will put about an inch half low at 25 yards ,dead on at 50 & dead on at 225 correct or (close)?It comes with 2 free cps . & like 1.8 high at a 100 .any help will be appreciated thank you ! |
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Use the ballisitcs program I posted.
You have to know your LOAD; Bullet and Velocity. NONE of us can tell you exactly what the trajectory will be unless you tell us the relevant data, and if you know that you can type the info into the calculator and be done with it. Play with the thing. It has been 100% reliable for me. It has practical application, and allows you to adjust your POA for various ranges. For example {forgive me, this was not shot with an AR...}, after testing and using the calculator, I shot the following groups on NON-POA-specific targets. Rifle is a chopped, 17-inch bbl'd 6.5x55 I use for ski jaunts and varminting and such. Now, these are NOT bench groups {read the notes on the targets} but once you zero POSITIVELY at a known distance, this is the sort of stuff it allows you to do. Scope in this case has no range markings, I just held high/low according to estimates in my head. The purpose of these predictive programs IMO is to get you a "hard" zero, thus also giving you the ability to shoot practically, from field positions, which introduces more shooter error. For me that means killing varmints, predators and game. 
300 meters, shot from sitting down, elbows rested on knees; 
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Quoted:
4" high at 25 yds will get you real close to a 100 yard zero. WHAT??? With any normal .223 load 4 inches high at 25 will get you some FEET HIGH at 100. Folks, looks like we need to go back to basics on some external ballistics. And some folks need to get some actual range time experience in. |
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Quoted:
Quoted:
4" high at 25 yds will get you real close to a 100 yard zero. WHAT??? With any normal .223 load 4 inches high at 25 will get you some FEET HIGH at 100. Folks, looks like we need to go back to basics on some external ballistics. And some folks need to get some actual range time experience in. It was just a minor fax pau on my part, I was sleep deprived. Thanks for pointing it out. I fixed it, but there's no need to a smart-ass, fuck-o....... |
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Quoted: Quoted: What da hell u smokin ?  Quoted: 4" high at 25 yds will get you real close to a 100 yard zero. 4" LOW damnit!!!!! Duh........ Ah, the bullet come out of the muzzle ~2.6" below the sights, at least on an AR. For a 100 yard zero, you will have the rifle tilted so the bullet will arc upwards until POA=POI at 100 yards. How is the round going to impact lower than the sights are above the barrel? |
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4" LOW damnit!!!!! Duh........ Ah, the bullet come out of the muzzle ~2.6" below the sights, at least on an AR. For a 100 yard zero, you will have the rifle tilted so the bullet will arc upwards until POA=POI at 100 yards. How is the round going to impact lower than the sights are above the barrel? Redfalcon...it's not...but you knew that already... ;) Eric; I suggested range time. I didn't mean to be a smart ass, just stating the truth. Look, 4" high or 4" low at 25 is not going to get you anywhere near a 100 yard zero....... |
| It looks like somewhere around 1.5" low at 25 would get the bullet path and line of sight to cross at 100. I ran this on Ballistic Explorer, but please double check for yourself. Taking unverified advice from strangers (including me) is how bullets sometimes end up over the tops of berms. |
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but please double check for yourself. Taking unverified advice from strangers (including me) is how bullets sometimes end up over the tops of berms.
This is exactly the point in all of this OP. Unless we have all the data pertaining to the load, as I stated before, we cannot give accurate info. OP: general terms are ok, of course, but as you know, shooting is a physical activity involving skill and as such ballistics programs and internet assessments can never trump range time and the field. |
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Quoted:
4" LOW damnit!!!!! Duh........ Ah, the bullet come out of the muzzle ~2.6" below the sights, at least on an AR. For a 100 yard zero, you will have the rifle tilted so the bullet will arc upwards until POA=POI at 100 yards. How is the round going to impact lower than the sights are above the barrel? Redfalcon...it's not...but you knew that already... ;) Eric; I suggested range time. I didn't mean to be a smart ass, just stating the truth. Look, 4" high or 4" low at 25 is not going to get you anywhere near a 100 yard zero....... Well all I can tell you is that with the iron sights or a red dot, if I zero dead on at 25 yds with a 55 gr FMJ bullet, it will impact a few inches hight at 100 yds. If I zero a few inches low at 25 yds it's close to zero at 100 yds. I've done it for years. And I probably have more range time then you have sperm count. take or leave it... |
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Eric; I suggested range time. I didn't mean to be a smart ass, just stating the truth. Look, 4" high or 4" low at 25 is not going to get you anywhere near a 100 yard zero....... Well all I can tell you is that with the iron sights or a red dot, if I zero dead on at 25 yds with a 55 gr FMJ bullet, it will impact a few inches hight at 100 yds. If I zero a few inches low at 25 yds it's close to zero at 100 yds. I've done it for years. And I probably have more range time then you have sperm count. take or leave it... Well, not only do I have enough range time to know you are talking rubbish because you are now all over the map with your posts, but I actually have a sperm count, too. A suggestion, along with the range time, try getting some exercise and eating red meat. |
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Quoted: Eric; I suggested range time. I didn't mean to be a smart ass, just stating the truth. Look, 4" high or 4" low at 25 is not going to get you anywhere near a 100 yard zero....... Well all I can tell you is that with the iron sights or a red dot, if I zero dead on at 25 yds with a 55 gr FMJ bullet, it will impact a few inches hight at 100 yds. If I zero a few inches low at 25 yds it's close to zero at 100 yds. I've done it for years. And I probably have more range time then you have sperm count. take or leave it... Well, not only do I have enough range time to know you are talking rubbish because you are now all over the map with your posts, but I actually have a sperm count, too. A suggestion, along with the range time, try getting some exercise and eating red meat. You're the guy who had the interesting AK thread, at least before people came and took a poop in it, right? |
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Quoted:
Quoted:
Eric; I suggested range time. I didn't mean to be a smart ass, just stating the truth. Look, 4" high or 4" low at 25 is not going to get you anywhere near a 100 yard zero....... Well all I can tell you is that with the iron sights or a red dot, if I zero dead on at 25 yds with a 55 gr FMJ bullet, it will impact a few inches hight at 100 yds. If I zero a few inches low at 25 yds it's close to zero at 100 yds. I've done it for years. And I probably have more range time then you have sperm count. take or leave it... Well, not only do I have enough range time to know you are talking rubbish because you are now all over the map with your posts, but I actually have a sperm count, too. A suggestion, along with the range time, try getting some exercise and eating red meat. You're the guy who had the interesting AK thread, at least before people came and took a poop in it, right? I suppose. I had a few. Guilty as charged. 
{BTW: Notice how nobody ever posts pics of range results over there...? Even when they promise to... Just anecdotes about how little kids shoot great with 8" bblled guns at 250 yards...  }
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