Short side down because 11mm is wider than 3/8”, they always seem to come setup for 3/8” for some reason. This is your problem, just like pictures posted by McNasty.
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N/A Scope alignment puzzle
- Thread starter TG59
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I used a leapers picrail adapter that slides on and is squeezed closed by the screws to clamp even(no side plate)on my TX200, because I hate dovetail.
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im sorry to burst your bubble,
but,
that super tactical dude doesn't have the slightest clue how to align the crosshairs to the bore the right way.
i only watched till he sat the big bubble level onto the turret and that was all i needed to know lol
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a STEADY gun rest is crucial when using the mirror method!
the scope can and will rotate as you snug down the rings,
always check and recheck in the mirror,
you cant check enough,
ill check/snug/check/snug etc.....
and have found,
depending on what rings im using,
that sometimes i have to align the crosshair slightly off center towards one edge of the bore or the other,
to get it to be straight and level after the rings are snugged down.
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Another thing to know if weather or not your levels are even true to level.
By the way I level off the turret. ( but not with a 6' level
). So?
By the way I level off the turret. ( but not with a 6' level
). So?Upvote 0
That can give a guy a fit . Probably the hardest part keeping it from rolling when tighting no matter how even you tighten .. but old pre used rings it's not so bad as fresh new can be ..
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I think you're bursting his bubble not mine...lol. It's the highest viewed video on you tube on the subject, also I level off my turret. Care to explain why this is not appropriate instead of dismissing it without being so...brief?
Top 5 comments...
-Matt
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It's actually the other way around. An 11mm dovetail is dimensioned to the outside, whereas a 3/8" dovetail is dimensioned to the inside of the groove. A 3/8" dovetail will typically measure 12mm - 13mm if you put calipers across it.
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The reason leveling from a turret cap is less than ideal is because the reticle itself (in the erector tube suspended inside the scope) may be rotated relative to it. Even premium scope brands may specify a tolerance of 2° to 3°.
The same is true of leveling to any external feature of the scope such as the flat underside of the scope midsection, which is the weakness of wedge leveling jigs like the one from Arisaka.
The same is true of leveling to any external feature of the scope such as the flat underside of the scope midsection, which is the weakness of wedge leveling jigs like the one from Arisaka.
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Regarding rings with reversible clamping plates for 11mm or 3/8" rails, here's the way they work if they're designed properly...
The tooth on one side has a 45 degree angle. The other side has a shallower angle...that one is 60 degrees. The 45 is for a 3/8” rail. The 60 is for an 11mm rail.
If you're unsure about the rail itself, place a caliper across the dovetail. An 11mm rail should measure very close to 11mm, usually within a tenth or two. A 3/8" rail will usually measure somewhere in the range of 0.470" - 0.510" (12-13mm).
Having said all that, it's of absolutely no consequence if the scope is offset slightly due to a 3/8" vs 11mm mismatch as long as:
The tooth on one side has a 45 degree angle. The other side has a shallower angle...that one is 60 degrees. The 45 is for a 3/8” rail. The 60 is for an 11mm rail.
If you're unsure about the rail itself, place a caliper across the dovetail. An 11mm rail should measure very close to 11mm, usually within a tenth or two. A 3/8" rail will usually measure somewhere in the range of 0.470" - 0.510" (12-13mm).
Having said all that, it's of absolutely no consequence if the scope is offset slightly due to a 3/8" vs 11mm mismatch as long as:
- you clock the scope so its reticle intersects the bore (a la the mirror method scouty and starlingassn described), and
- you hold the gun so the reticle is level when you are shooting
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The gospel.
Now that really sums it all up..
How to level a scope | Blog | Pyramyd AIR
by Tom Gaylord, a.k.a. B.B. Pelletier This report covers: • Why does a scope need to be leveled? • Scopes cannot be leveled. • A leveling solution. • Bubble levels. • What works • What about a collimator? • My moment of enlightenment. I promised this report to blog reader Genghis Jan over half a
www.pyramydair.com
Now that really sums it all up..
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Referring to the comment about a 2° to 3° tolerance between the turrets and reticle?
Yeah, I was skeptical too until I experimented with a 10pk of cheap, short (25mm) spirit levels to our expensive digital level at work. And by cheap I mean $3.50 for a pack of 10. Surprised to see they were sensitive enough to easily distinguish a change of 0.5 degree, with a baseline accuracy of about the same.
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When you consider the connections of scope to rings, rings to action, action to stock (and many are not inlet square), bipod or rest to stock, and bench to earth, it gets kind of elusive. Given the distances most of us shoot, I suggest not spending a lot of time on it. Get the scope mounted reasonably square, then assume your shooting position and zero the rifle. Any error involved will rarely cause a problem. I know this is almost unthinkable to the OCD among us, but that's my experience.
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I was just looking at the cheaper mechanist levels at Amazon .. for $25 or less you can get something useable .
There was one I kinda liked with a truing screw. That be a plus truing 2 levels up..
One thing the levels in my box all true up to each other anyway you turn them .
Sorry
Phone crashed it was one like this
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Thanks all for giving me a lot to think about.
Update:
Flipping ring side plates didn’t solve the issue.
I have been using cradle that allows gun to be clamped in place.
Starret levels have been used - quite reliable.
Won’t be able to work on it for a few days, but will update after trying a few more things.
Update:
Flipping ring side plates didn’t solve the issue.
I have been using cradle that allows gun to be clamped in place.
Starret levels have been used - quite reliable.
Won’t be able to work on it for a few days, but will update after trying a few more things.
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