Quoted:
EOtechs are supposed to be pretty much on out of the box. My 512 was at 50 yards. I'd say you got very lucky with the Leaper though.
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What if I had purchased your 512 and installed it on an M1A and zeroed it for 100 yards? How can anyone possibly think that any optic is "pre-zeroed" at the factory? The "factory" has no way of knowing what kind of rifle that optic will be put on, what caliber the rifle will be, how that rifle will shoot...it is nothing more than blind luck to get a scope of any price range that is even on paper from the factory.
Please let this madness stop.
OUT
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I guess I should elaborate on what I meant. Jeez, can't you guys read minds? I'm pretty sure that I've read, probably here somewhere, that the EOtech is set up from the factory for a flattop AR15. Now, it's easy for me to relate to this because this is what the MRS(Muzzle Reference Sensor) on an M1 Abrams did (does still?) way back when. You used to boresight an M1 by moving a lever on the GPS which would swing a refracting type of lens into the optic path. This let you view the permanent MRS "crosshair" in the gunner's sight. You would then use toggle type switches to align your reticle onto the MRS crosshair. And if I can remember correctly, there was a way to zero out your reticle when a new MRS was mounted.
I am willing to bet that if you take apart an EOtech you'd find that your windage and elevation are essentially potentiometers that move the holographic reticle. If they took a flattop AR and used a laser boresighter at 25 or 50 yards, they'd probably find that for a given value of resistance on each pot that it would be aligned. Therefore it would be possible to have it leave the factory set for these values and at least on one type of rifle it would be pretty close. You are absolutely right about putting it on an M1A. It's exactly why (IMO) the collimator type of boresights are kind of worthless. How could your possibly use the same collimator when you'll have all types of ring/base/scope heights?
Again, I would agree about it being pure luck to ever mount any scope and have it be on. I would think you would agree though that if we're talking about a mechanical type of adjustment in a scope they may be able to accomplish the same thing, but they're probably not willing to try. Why would a manufacturer bother to say if you buy our model "Z" scope and use our "Y" base with our medium height rings on a Rem 700 SA with a muzzle velocity of 2,900 FPS +or- 50FPS you'll be on the paper at "%" yards? They're not making any more money saving you on the cost of ammunition. Average Joe comes out to my range only on the 4 or 5 weekends before the deer season starts and blasts a box or two off while adjusting his scope all around. When he's done, he can't understand why he missed with the first shot out of that cold barrel.
It would be a lot easier in the manufacture of the sight if it has electronic adjustments to do so. I would also speculate if EOtech tries to do this because so many go directly to the sandbox now and you could theoretically put it on and go do CQB without sight in. Not very wise, but it could be done. As I said I think I've heard this, but if you want to cut costs, why bother paying the labor to perform this step?
I had mounted my EOtech and when I got to the range pulled my upper off, sandbagged on the bench, and boresighted through the barrel to the target. I knew it would be about centered on the paper and it was. But I can pull the bolt on a bolt action on sandbags and do the same thing with whatever brand of scope. Save a lot of ammo that way.