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VT, USA
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Posted: 5/5/2024 3:02:40 PM EDT
Hey all -
I've just put a new stock on my main AR, and I've found I'm just a bit inside the eye-box on my Eotech VuDu 1-6X when I've got the stock set comfortably. Moving the Eotech Scope forward on the rail by two spaces gets it perfect. Considering I virtually NEVER shoot beyond 200yds with this rig, do I need to go through the whole zero process again? My thanks in advance for any help! |
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Posted: 5/5/2024 3:07:14 PM EDT
[#1]
I would. Don't have to go thru the entire zero process but checking it is absolutely worthwhile.
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Posted: 5/5/2024 3:07:18 PM EDT
[Last Edit: DVCER]
[#2]
Given a good rail and good mount it shouldn’t be off much. Might not be off at all, or a bunch.
I would confirm zero. Next time pull the upper off before you move the scope, do a bore sight check on the optic. Move the optic and recheck. |
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Posted: 5/5/2024 3:14:55 PM EDT
[#3]
It may have changed, it may still be dead on.
No one here is going to be able to give you a definitive answer about your gun, so fire off a few rounds at a target at your zero distance when you’re at the range to confirm, no need to make it complicated. |
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Posted: 5/5/2024 3:16:16 PM EDT
[#4]
If the mount has no bearing on an anti-rotation tab or the like, I'd fo. Shouldn't be off more than 0.5 MOA. Refine at your convenience.
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ID, USA
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Posted: 5/5/2024 3:28:02 PM EDT
[Last Edit: HawkinsID]
[#5]
Absolutely re-zero.
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Posted: 5/5/2024 3:30:23 PM EDT
[#6]
Quote HistoryOriginally Posted By HawkinsID: Absolutely re-zero. |
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Posted: 5/5/2024 4:46:32 PM EDT
[#7]
any time I pull the scopes off I feel the desire to re verify zero.
good excuse for range time! that said, I was pulling the lpvo off the primary boomstick so it would fit in the "not a rifle bag" for a while, and it held zero pretty well. now I just let the grip stick out the slightly open zipper. need a new "not a rifle bag" or some other way to disguise it. moving the scope a few spaces forward or back shouldn't make any difference if the rail is machined correctly. |
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VT, USA
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Posted: 5/5/2024 5:01:51 PM EDT
[#8]
Thanks for all the opinions guys ....
If you're wondering why the reluctance to go out an re-zero, it's VERY heavily wooded where I am and very hilly. There's only one spot on the property where I've got a relatively flat and clear LOS out to 200+ yds, and it's a HELL of a trek to get there .... and it's POURING rain today lol. |
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Posted: 5/5/2024 6:51:04 PM EDT
[#9]
Yes, but you likely won't be off much at all. Still needs doing.
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MN, USA
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Posted: 5/5/2024 9:10:43 PM EDT
[#10]
Originally Posted By DWPW: Hey all - I've just put a new stock on my main AR, and I've found I'm just a bit inside the eye-box on my Eotech VuDu 1-6X when I've got the stock set comfortably. Moving the Eotech Scope forward on the rail by two spaces gets it perfect. Considering I virtually NEVER shoot beyond 200yds with this rig, do I need to go through the whole zero process again? My thanks in advance for any help! We did exactly this, but in the opposite direction, on my SIL's build and it took him from center of paper to the edge of the paper after simply moving the scope rearwards on the rail. Absolutely you must zero again. |
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Posted: 5/5/2024 11:21:36 PM EDT
[#11]
I use a primary arms 1-6 lpvo on my 16” gun. It’s in a basic adm qd mount. I’ve taken the scope off and remounted it a bunch of times and it’s always spot on when I go shooting.
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Posted: 5/6/2024 9:25:04 AM EDT
[#12]
You should 100% reconfirm
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Posted: 5/6/2024 9:34:27 AM EDT
[Last Edit: EdgecrusherXES]
[#13]
Quote HistoryOriginally Posted By DVCER: Given a good rail and good mount it shouldn’t be off much. Might not be off at all, or a bunch. I would confirm zero. Next time pull the upper off before you move the scope, do a bore sight check on the optic. Move the optic and recheck. Like he said good chance it will be close or no change at all. I have done this using QD mounts and seem minimal to no shift at all. The minimal was within an inch or two. I would conform though. |
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Posted: 5/6/2024 9:47:54 AM EDT
[#14]
Be aware that any difference in torque on the mounting screws will shift you POI. Unless it's a throw lever, moving it means retorquing the screws which can mean different POI.
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MN, USA
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Posted: 5/6/2024 12:05:08 PM EDT
[#15]
Quote HistoryOriginally Posted By EdgecrusherXES: Like he said good chance it will be close or no change at all. I have done this using QD mounts and seem minimal to no shift at all. The minimal was within an inch or two. I would conform though. Most decent QD mounts are designed to be removed and reattached. If you put a QD back in the same place on the rail it should be close. The same isn't true for non-QD mounts, and moving forward or rearward on the rail will change POI, as will the tightening of mounting screws differently. I have seen with my own eyes how extreme a shift it can be, so it would be silly not to confirm zero. Hell, I re-confirm zero on my hunting rigs every year before taking to the woods. |
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USA
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Posted: 5/9/2024 5:44:33 PM EDT
[#16]
Maybe. But you won't know until you check.
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Posted: 5/9/2024 6:02:56 PM EDT
[#17]
My OCD makes me re-zero the day before at the same elevation as whatever major match I attend.
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TX, USA
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Posted: 5/10/2024 1:02:00 AM EDT
[#18]
Yes
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ID, USA
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Posted: 5/10/2024 11:05:46 AM EDT
[#19]
I swapped out my A2 flash hider for a Smith Vortex. I zero'd it this morning. My zero changed by 1.5" at 50 yards.
If you change anything on the barrel or optics - re-zero. |
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Posted: 5/10/2024 4:02:34 PM EDT
[Last Edit: HighpowerRifleBrony]
[#20]
Quote HistoryOriginally Posted By HawkinsID: I swapped out my A2 flash hider for a Smith Vortex. I zero'd it this morning. My zero changed by 1.5" at 50 yards. If you change anything on the barrel or optics - re-zero. |
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ID, USA
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Posted: 5/10/2024 4:35:58 PM EDT
[#21]
Nope. You tighten the Vortex by hand and it self tightens. It weighs more than the A2 and is longer.
Anything you do tithe barrel requires a re-zero. |
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USA
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Posted: 5/10/2024 5:00:26 PM EDT
[Last Edit: SteelonSteel]
[#22]
Quote HistoryOriginally Posted By DWPW: Thanks for all the opinions guys .... If you're wondering why the reluctance to go out an re-zero, it's VERY heavily wooded where I am and very hilly. There's only one spot on the property where I've got a relatively flat and clear LOS out to 200+ yds, and it's a HELL of a trek to get there .... and it's POURING rain today lol. It’s VT, pick a quiet town highway.  I kid I kid. Most I have been off is 1 to 1.5 moa, doing the fore/aft rail reposition. I have played with QRW leupold rings and Larue mounts both to see if they shift much. They don’t. Just hold the ring/mount forward against the slot of the rifle. |
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MN, USA
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Posted: 5/10/2024 5:20:37 PM EDT
[#23]
There's only one spot on the property where I've got a relatively flat and clear LOS out to 200+ yds 50/200? A 50 yard near zero will get you damn close @200, depending the the ammo and the height of your mount. You can always run your numbers through a ballistic calculator and establish your near zero distance for any downrange zero as well. |
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USA
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Posted: 5/12/2024 5:25:20 AM EDT
[#24]
Always confirm your zero if you are moving your scope around. It will only take what, two to three mins max?
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Posted: 5/12/2024 6:08:26 AM EDT
[#25]
Always check.
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Posted: 5/15/2024 3:57:55 PM EDT
[#26]
Quote HistoryOriginally Posted By fxntime: I would. Don't have to go thru the entire zero process but checking it is absolutely worthwhile. This |
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Posted: 5/16/2024 10:17:25 AM EDT
[#27]
Yes you need to rezero. You'll be off, but not by much.
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