I just got a HW97k in .177. I installed a Hawke Airmax compact 4-16 in a Sportsmax Dampa one piece mount and first group at 15 yards was about 3" low. If I shim the bottom of the rear ring, about how much elevation would I gain, wanting to do this to more center the horizontal crosshair. I have never shimmed a scope before, the closest thing was using a set of Burris Signature rings with eccentric inserts to align a scope. The rifle was a nice custom mauser that someone had drilled and tapped and the holes were not aligned so the rear rings were off to one side a bit. My gunsmith corrected a base to bring the rings closer to parallel and the rings with the eccentric inserts finished the job,, although they could have done it alone.
Scope shimming
- Thread starter jkingrph
- Start date
I had a 22 Rimfire that shot 4 inches low at 50 yards and a .004 Shim was plenty enough.I myself wouldn’t want to use too Thick Of a shim.
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+ 1 on the .004 in the rear ring. I bought a nice brass shim stock Package from Brownells that comes with sheets from .001 to .010 that you cut to your spec. I usually fold a .002 piece over the front edge of the front ring to compensate for the angle stress - which would mean .005 or .006 for the rear.
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A beer or soda can is about .004".
Most droop mounts are .007".
Personally I never shim scopes. I bend the barrel upwards if there's an issue on a spring gun. My HW77Ks both got this treatment
Most droop mounts are .007".
Personally I never shim scopes. I bend the barrel upwards if there's an issue on a spring gun. My HW77Ks both got this treatment
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With what is available today I don’t know way anyone would shim rings. Yes you probably will not hurt anything but why would you take a chance I like the FX rings but there are others. There are also one piece picatinny bases with elevation built in. Just no reason not to do it right. A gunsmith wouldn’t do it.
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