I was wondering if any one out there knew of or how I could get my hands on a base for my H&R single shot rifle in a 5 MOA 10 MOA 15 MOA I have been shooting my 44 Mag and noteced that with the distance I like to shoot some of the scopes are running out of adjustments do to the faster drop rate..

Do you have weaver bases on it? Simplest way would probably be to get Burris Signature rings with the offset inserts.

Like here:

http://www.natchezss.com/categ...&brand=BU&catLevel=1

(no recommendation is implied on buying them from Natchez but the link does put both products on the same page, and I have been happy ordering from them before)

Burris Signature rings would be the easiest as mentioned, but if you really need variable MOA, you'll have to change the inserts and re-zero each time. Never seen a rail with multiple MOA built in. I've made a couple tapered bases for myself and I think that it would be possible to make a base rail with several steps built in at different angles, but it probably wouldn't look very nice. I think your best bet would be to pick the number in the middle (10 MOA or??), set the base or rings for that and then adjust up and down from there. Or get a scope with lines on the vertical wire for drop. Burris makes a nice 3x9 with that reticule that comes in that $200 package with a decent set of binoculars.

Cheapest and easiest way would be to shim the base. .020" shim on the front is about 15MOA.
Granted I don't like doing it this way as you are still trying to bolt everything down flat and with the shim in the front it want to tweak the base.

For $100 I'll make you one in what ever moa you want? But on a $250 rifle that may be over kill