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Old June 5th, 2018, 07:35 PM #31
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Use the parallax adjustment in the scope to minimize the effect if you have it. Most people will just put their parrralax adjustment (most people think it’s a focus) on the distance to the target and start shooting.

This is a mistake. You want to fine tune it, check by moving your head and watching for the reticle moving or staying stable. Make minor adjustments until it does stay put. Depending on the scope, the target may not be in focus anymore. Parralax reduction takes precedence. If your target is a touch out of focus no big deal. If it’s a lot out of focus you have a faulty scope and should have it replaced or serviced.

Taking the time to do this will make small mistakes in your shooting position and eye alignment less problematic and your groups will thank you for it

Last edited by Major03; June 5th, 2018 at 09:56 PM.
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Old June 5th, 2018, 09:42 PM #32
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Here's a visual explanation of parallax:





Pretty much sums up what Major03 said.


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Old June 8th, 2018, 02:01 PM #33
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Leupold makes a mount that you can center side to side but not elevation. I have one on my7400. With a good rail and rings or a good unimount you shouldn't need it unless the rifle is messed up. Then it probably doesn't matter what you strap to the top of it. Badger Ordnance has excellent discounts for military L/E. I put one of their unimounts on my AR-10.
http://www.badgerordnance.com/unimounts.html?___SID=U
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Old June 16th, 2018, 01:34 PM #34
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Range report:

Had what I consider my first productive day at the range yesterday. Yes. the wire under the rear mount fell out, as I was told on the forum would happen. I didn't listen, feel free to abuse me briefly. (Need to Loctite the scope screws and toss a couple allen keys into the range bag for future repairs). Borrowed a hex key and tightened the scope up. Ran a box the do major adjustments at 50 yards, then focused on 100 yards. most rounds were grouping in a 6 inch circle clustered around the aim point. At this point I'm going to leave the scope adjustments alone and concentrate on closing in the groups using parallax adjustment and technique. Then I'll make a final call on final adjustments and move to holdover at 200 yards.
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Old June 16th, 2018, 01:47 PM #35
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Thanks for the update.
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Old June 17th, 2018, 03:43 AM #36
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This may sound silly but in all the vids Ive seen of Larry Potterfield mounting a scope he always laps the rings first
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Old June 17th, 2018, 09:11 AM #37
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I have a single piece mount not separate rings.
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Old June 17th, 2018, 11:57 AM #38
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Based on the pic earlier in the thread, it’s a single base scope and has two separate rings, right?

Lapping could help, but I really doubt it’s what is causing the misalignment by that much.

Again, I go back to truing the barrel extension to the upper. My bet is that would center everything up and your rifle would also be a bit more accurate.

Simple job for a gunsmith, not too hard a DIY job with the tool from Brownells and some guidance.

Last edited by Major03; June 20th, 2018 at 12:50 PM.
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Old June 17th, 2018, 06:57 PM #39
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Scope ring lapping tool.

https://www.brownells.com/gunsmith-t...prod36022.aspx
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Old June 20th, 2018, 09:40 AM #40
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Quote:
Originally Posted by Tracker View Post
This may sound silly but in all the vids Ive seen of Larry Potterfield mounting a scope he always laps the rings first
+1. Best videos out there. I got that lapping kit last year and what a huge difference it makes!!
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