Scope question??

If you are using a two piece base then I don't know why it would come with a shim..I have seen shims come with one piece bases,but on a two piece one is usually just thicker if needed..To answer the question .If you are out of adjustment range,and are hitting low then the back of your scope would need raised with the shim..Make sure one base is not thicker than the other you may need to switch them.

Let me begin by saying: I have no experience with shimming a scope, but it "seems to me" that if you have a two piece base and you shim one of the bases to raise it, the scope tube will no longer be in alignment with the opposite ring. In effect, when you tighten the rings, you will be stressing the scope tube. No?

It's unusual for a scope to run out of adjustment. Center the windage and try it again

You can cut shims from a beer can and place under the rear base.

Sounds like the wrong bases were selected. Or, the bases are reversed from a correct installation.

With the adjustment maxed: To raise the point of impact, a higher rear base would be needed. To lower the point of impact, a lower rear base would be needed. (While the OP sounds like he's maxed upward with the adjustment, it's not clear to me.)

FWIW: I have occasionally had to swap bases. The change in angle did not harm the scope in any way.

As noted try swapping front to rear and perhaps rotating both or one --180 degrees.

My Mohawk 243, has an extra piece for the rear , that came with the 1 pieces base.

I still had to shim the rear , using soda can material , that is about .004" thick.

You can shim the rear. Make sure the screws are long enough, if a lot of shim materal is used.

Weaver rings can be swapped, front to rear. Or reversed 180 degrees to help get sighted in.

I dont see any Weaver brand , 2 piece bases listed?

There is a Weaver 1 piece base , like mine listed. 70 (48070) https://www.midwayusa.com/product/206584/weaver-top-mount-scope-base-70-gloss

The photo doesn't show the extra piece for the rear? Should come with it.

When I was mounting 20-30 scopes a week I had to shim occasionally. It does happen. For years I would only shim a one piece base because it was my understanding that shimming with two piece bases put too much stress on the scope tube.

One day when I was on the phone with Leupold ordering supplies I asked them about it it. Their rule is that you can use up to three shims on one base of a two piece base set without stressing the scope tube, at least with their scopes. I've down it a couple of times now with no issues I'm aware of.

If you need more elevation you shim the rear base. Seems counterintuitive to me but that's the way you do it.

Shimming the rear will raise your POI, shimming the front drops the POI. Sounds like you need the former.

There are tricks to aligning the rings on top of shimmed bases. I use a lapping mandrel, bedding the bases with epoxy, pulling only the front screws of each base down tight - the lapping mandrel forces the bases to tip slightly as the rings are tightened onto the bases, and the epoxy beds the angle permanently. Once everything is hard, I tighten both screws and everything is set firm.

Of course, it's a much better option to use a one piece base, in which case, bedding works effectively the same, except you don't have to use the lapping mandrel as the alignment guide - the body of the mount itself will force the bedding angle.

I have a spare one of those one piece bases that 243winxb mentions if you want it. I use them on my Arisakas, but the most recent one had a different base already attached.

Pose your question on YouTube. Should be a tutorial on the subject. Audio/visual.

I used a Weaver extension ring, mounted backwards, with the 1 peice base. i learned later to cut a new notch with a file , where i needed it.

The 2 piece base may help.