These are generalzations and you will have to confirm with your rifle and with your ammo.

Say you have a 16" barrel AR shooting 55 grain 223/5.56 which makes about 3000 fps in your barrel. Your iron sights are 2.6" above bore.

If you zero at 50 yards would will also be zero'ed at 220 yards. One zero is for the bullet flight up, and the other is for the fight down. This would probably be the best zero for most people w/ 55's.

So here is your hold overs...

25 yards 1" low

50 yards zero

75 yards 1" high

100 yards 1.5" high

125 yards 1.8" high

150 yards 1.8" high

200 yards .75" high

225 yards .32" low

250 yards 1.8" low

275 yards 3.75" low

300 yards 6" low

325 yards 9" low

350 12.32" low

375 yards 16.25" low

400 yards 20.75" low

Now you have to confirm so that means check the data for your ammo, chrongraph your ammo in your gun, measure your height over bore and plug the data in balistic software. Then shoot the gun at various ranges to confirm.

or for less anal retentive people (aka everyone not like yar). zero at 50, see if you can hit stuff holding dead on at 200 - 225 then guess-timate your hold overs off of that.

Last edited: May 21, 2008