Gunsmithing scope mounting tutorial (for newer shooters)

Re: scope mounting tutorial (for newer shooters)

Thanks, I picked that up from a fellow Snipers Hide member. At an Army competition, his spotter was cleaning his M9 pistol and I saw a feeler gauge pack in his cleaning kit and asked what it was for. Those guys are military sniper instructors.

Works a heck of a lot better than trying to level the gun and level the scope by hand while tightening screws.

The only thing to pay attention to is to use the correct combination of shims so when the scope is tightened it isn't hard to remove. This can be felt for by trying to rock the scope fore and aft (axis of rotation being the shim pack) between the two rings.

If there is rocking, the shim pack is too tall. If there is no side to side play and no rocking that is the correct shim height.
 
Re: scope mounting tutorial (for newer shooters)

Thanks for the video! I'm one who didn't understand the shim approach to leveling a scope so I sure appreciate the visual explanation! - Todd
 
Re: scope mounting tutorial (for newer shooters)

I make my shim stack so it's a snug fit between base/scope when the ringcaps are tight. I have to wiggle the feelers out. This guarantees the scope is parallel to the base. I don't like making tge judgement call of when the scope is in tge middle of its "rocking range".
 
Re: scope mounting tutorial (for newer shooters)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: turbo54</div><div class="ubbcode-body">I make my shim stack so it's a snug fit between base/scope when the ringcaps are tight. I have to wiggle the feelers out. This guarantees the scope is parallel to the base. I don't like making tge judgement call of when the scope is in tge middle of its "rocking range". </div></div>

I think you're implying I don't do this properly. That's not the case. If the scope is rocking, the shim stack is too tall. You want it to be the right height so that there is zero tolerance, but not a high spot at the location of the shims.

If you use too much material there you will be bending the scope housing when you tighten the rings. That's not desireable. So snug is what I'm going for- not extra shim stock.

When you pull the shims out they should be snug just like you are describing.