Umarex Problem zeroing airgun: Umarex Notos

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MongooseV8 said:
Yeah I just dont understand how that is a good idea. Shimming a solid 1-Piece base is one thing, but shimming under the scope tube sounds crazy to me.
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Your example is accurate, although exaggerated. I've limited their use to a .020" maximum shim. But yes, it results in an imperfect bedding surface for the ring and scope tube. Using modest torque, I've never had a damaged scope, not even a scratch. Even though I know from experience that it can be an acceptable solution, given the adjustable rings now available, it might not be the best solution. Quality adjustable rings are expensive. Some of the inexpensive ones made in China (as the Monstrum) might be okay, but it requires a precision manufacturing process, so I would approach them with caution.
 
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elh0102 said:
Your example is accurate, although exaggerated. I've limited their use to a .020" maximum shim. But yes, it results in an imperfect bedding surface for the ring and scope tube. Using modest torque, I've never had a damaged scope, not even a scratch. Even though I know from experience that it can be an acceptable solution, given the adjustable rings now available, it might not be the best solution. Quality adjustable rings are expensive. Some of the inexpensive ones made in China (as the Monstrum) might be okay, but it requires a precision manufacturing process, so I would approach them with caution.
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I find it humorous that you speak of "inexpensive" rings being approached with caution while suggesting a rigged hack as an "acceptable solution"?
 
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Firewalker said:
I find it humorous that you speak of "inexpensive" rings being approached with caution while suggesting a rigged hack as an "acceptable solution"?
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Just trying to pass on my experience. The rings referenced may be great, but I've seen Chinese rings with very poor machine work, which can be especially problematic in adjustable rings.

Obviously, shimming shouldn't be used if you aren't comfortable with it and willing to do it correctly. But with all respect, referring to it as a "rigged hack" is a bit unfair and misleading. A little research will show that BR and long distance shooters have been shimming scopes for many years, and it has indeed proven to be an acceptable practice.
 
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elh0102 said:
Just trying to pass on my experience. The rings referenced may be great, but I've seen Chinese rings with very poor machine work, which can be especially problematic in adjustable rings.

Obviously, shimming shouldn't be used if you aren't comfortable with it and willing to do it correctly. But with all respect, referring to it as a "rigged hack" is a bit unfair and misleading. A little research will show that BR and long distance shooters have been shimming scopes for many years, and it has indeed proven to be an acceptable practice.
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"Humorous"

It was funny, not unfair nor misleading to say "rigged hack", my boss would have beat me with his cane if I'd shimmed a $4k Night Force with a beer can. :ROFLMAO:

Yes, shimming used to be the sole option with old school rings due to non-adjustable bases screwed into actions but we have better choices now.

Also, shims slip quite easily and adhesives slough.
 
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MongooseV8 said:
Yeah I just dont understand how that is a good idea. Shimming a solid 1-Piece base is one thing, but shimming under the scope tube sounds crazy to me. You are effectively doing this:

5gXcDfyh.jpeg
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I’m have never seen something like this at all

When I did mine everything was fine and even. My winchester 94 30-30 with an old side mount and a old weaver 3-9 with shims holds zero with no issues since Ive shot about 60 hot federal rounds with it. Still zeroed to 150 yards.

Im still confused how that ring ended up so crooked in that image. Someone must have done something wrong
 
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