Originally Posted by sarf
I know you are having a laugh, Baldie. . but try this:
Put some engineer's blue on your scope. Rotate it in the scope mounts whether Sportsmatch or whoever's, see how much contact there is. In my experience, not a lot. Same with the caps. The finished surface of the mounts is not the result of precision line-boring, for a start there is the paint/anodising.
Lapping gives you a certain reassurance of a good mechanical bond between scope and mounts, possibly slightly improving reliability and definitely minimising the risk of damage to the 'scope tube.
Lapping may be a waste of time, but it's not a bad idea!
Well, if you can afford to customise your rings .....
I understand what you're talking about in terms of contact. But for airguns, especially PCP's, Sportmatch remain about the best. I use them on HMR and LR too, and they perform very well.
For full-bore shooting, I use Tactical Precision mounts on a Picatinny rail. Concentricity of the rings is probably better than the tolerance on the scope tube. And I'd never grind the coating off the scope tube to get the tube round to the rings.
Mindful people are using £500-£1000 rifles and £200-£400 scopes, it makes no sense at all to skimp on mounts. Most expensive isn't always best either.
£50 for an adustable mount seems very very reasonable to me.
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