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Posted: 11/27/2016 1:40:22 PM EDT
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It's fairly close, certainly close enough for people sized targets. https://robarguns.com/blog/2013/11/24/battle-sight-zero-bzo-who-has-it-right/ |
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I thought 37.5 was the ideal zero for a SD AR? Maybe. The definition of "ideal" depends on how far out you want your far zero to be and how much slop between the muzzle and the far zero you're willing to accept. For out to 300 yards, the 36 yard zero is probably about ideal. For out to about 225 yards, the 50 yard zero is about ideal (less height over line of sight out to 225 yards than the 36 yard zero). For out to about 100 yards, the 100 yard zero is ideal (even less height over line of sight than the 50 yard zero out to 100 yards, but it will drop like a rock not far past 150 yards because the 100 yard zero is really just the near zero). If you think your shooting will be 150 yards and in, go with the 100 yard zero. If you thing your shooting will be 250 yards and in, go with the 50 yard zero. If you think your shooting will be out to 300 yards, go with the 36 yard zero. ....snd then learn your hold-unders/-overs for that zero. |
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Quoted:
I had a guy who supposedly shoots 3 gun match to do a 33 yard zero. He said it would be on at 33 yards and 333 yards and 1.5" high @ 100 with a 55gr bullet. Is this true??? There are a lot of ballistics calculator apps out there. Assuming he's using a XM193 round, it would appear he'd be considerably off at 333 yards but on paper for a "man size" target of 30 inches. 33 yards zero is not considerably different from a 25 yards zero. I would imagine for soldiers, especially Marines who are about to deploy, they would be onboard a ship which might have 25 yards, 36 yards, or 50 yards ramps. So they take a known distance and simply know that it would be on paper out to 300 yards which is where most combat occurs. For the "normal" shooter, I would imagine the best zero at a range is the maximum your range allows. So 25 yards, 50 yards, 100 yards should be your zero range, if your range permits. 
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Also how does he zero? For me, I zero my optics on the 300 yards tick at 25 yards, which would give me a 100 yards zero.
Is your friend doing anything specific like that? If your friend has a 33 yards zero and wants to be on target at 333 yards, he would have to click his sights/optics down 2 MOA to be roughly zero'd at 333 yards. If his optic can do 1/4th MOA increments, then he could be that much more on paper. 33 yards zero, click roughly 1.3 MOA down and be almost zero at 100 yards. |
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Sometimes it simply comes down to basics, like your range has a 50 yd range but nobody has a 33 yd range. I've always been partial to the IBZ of 50/200 and that's where I zero (50) with a red dot and BUIS. The scoped carbine zeros at 100 which indexes the ranging lines under the horizontal reticle. The IBZ is very flat out to 200, only a little high at 100, so you are pretty much on the money with a dot or sight. I also use the 50 yd zero on the 7.62x39 AK which is basically a 50/100 zero and good out to about 150.
What a guy uses in 3-gun is his business but you can't go wrong with the IBZ. |
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Short range zeroes are intended to get you close at longer ranges, not dead on the money. Use the 25, 33, 50 yard basic zero to get on paper at the actual range you want to be dead on at. Adjust your scope to zero at the full range distance. It is a rare rifle indeed that doesn't need a little tweaking to get on the money at 300.
Again, short range zeroes are rough basic zeroes and must be precisely adjusted for 200/300 yards at the full distance. |
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