JE has brought up an interesting point about scope ring alignment that has got me thinking. When i install the bases (weaver) i only screw down the bolts lightly to allow the bases to move and align themselves to the scope but stay put while removing the rings and scope. then tighten and torque the bases. This only solves the problem of perpendicular (?) alignment but not horizontal. What if you used short studs instead of the base screws, set the bases over the studs, then install the rings and scope, then much like a rail or one piece base you could check for horizontal misalignment of the bases to the reciever. Then if needed, bed the bases or base that is out.
I realize this may be overkill, but lapping or reaming would not be nessesarry, or at least minimize it. I also realize that the quality of the bases and rings will go a long way to minimize misalignment, but we cant do anything about the condition of the receiver or the alignment of the reciver screw holes
If anyone has a better or simpler way to align two piece rings rings, by all means......E
That is part of my procedure. (Never tighten the ring to base screws more than hand tight to allow the rings to fit/align themselves to the scope.
I also machined a 1" and a 30 MM rod 10"long to check alignment before placing the scope in the rings. It will assure that the rings and bases(Horizontal and vertically) are aligned.
If not, I replace them. If there is a difference in the receiver height, I will do a stress free bedding of the base.
"NOTE" I have no room for aluminum rings and bases in my life after one to many failures.
And the cheaper bases are prone to be sloppy and misaligned. I believe in buying good to best quality rings and bases and don't mind spending $100.00 plus to prevent damage to a very expensive scope rather than cut corners and cost and risk damage to the scope. If you buy cheep rings and bases you will most likely have to spend more than the difference in the cheep and good mounts just to save the cheep mounts.
On hard recoiling rifles cheep scope mounts can/will fail at the worst time, so you don't save any money buying them and in the long run you will probably spend more.
It doesn't make sense to buy a $400.00 dollar set of rings and bases for a $200.00 dollar scope on a $300.00 dollar rifle, But on a long range rig, I consider a good to best set a must.
PS there is no such thing as over kill if it will improve the accuracy and dependability of you investment.
Just My Opinion for what it is worth.
J E CUSTOM