Not questioning anyone’s credentials here or there findings from testing I respect all angles here, a question just for my own piece of mind..If the two piece mounts were lapped and matched and a scope fitted to each set of rings that you have there and the same test applied would there be as much difference between the two due to more rigidity coming from the scope(one piece bridge) rather than a two piece scope alignment tool?
I get the test you posted but in my mind extra strength will be incorporated into the two piece ring system once the correct bridge (scope) is applied...
Yes, 2 piece scope rings 'can' be made more rigid with some elbow grease and bedding compound. I have one piece scope lapping bars and perform that test as well. The mounts most definitely become stronger, but there is still more of a difference with single rings.
In the first video I mention bedding the base of the rings to the rail. This helps form a good bond of the ring base to the rail which also helps a lot with resisting any outside forces that may try to misalign the rings.
As mentioned before, the mounts become much more rigid as a whole with a scope tube bonding them together. The difference is that the scope tube is being used more to make the separate rings perform as a single solid mount. Where as with a one piece, the mount itself is the pillar of strength and does not require the scope tube to keep it's rings rigid, straight, and true.
Both the one piece and the scope rings in both videos were straight out of the box, not lapped, bedded or modified in any way to keep things somewhat fair. The one piece requires virtually no work for additional alignment or strength, tho I still like to bed the scope tube in the one piece rings with JB Weld for maximum resistance against slippage under recoil.
Bedding the rings to the scope body is a 'must' in my opinion for perfect alignment and maximum strength when using 2 scope rings. Bedding of course also eliminates ring marks on the tube.
A one piece mount can also be moved to different positions on a rail with no adverse effects to strength or alignment. With 2 piece rings, once you get them set, bedded and aligned, they have to remain where they are on the rail. If moved to a different position on the rail, there is no guarantee alignment or rigidity will remain the same. Will need to check them for sure.
I plan on doing another video on scope ring bedding at some point.