They are very well made and quite strong. Another nice thing is that both front and rear rings are adjustable for windage.
They also look damn good. The only big problem is they are somewhat of a PITA to put together, but not too bad if you've done it once or twice.
Many people make the mistake of over-tightening the screws in the bases that hold the rings on. This can REALLY leave ring-marks, and even crush a scope's tube.
+1
I've used a lot of Conetrol mounts & they are some of the nicest & strongest around.
As JB says, they can be a bit if a PITA to get the scope squared up in the rings.
Here's a couple of hints/tricks I've learned:
1. Do not mix ring halves & caps, they are a matched unit & will not fit correctly if mixed.
Note: on the top of the rings there will be an index notch & also a notch on the underside of the cap......these need to be aligned when the cap is put on2. After getting the bases mounted, use half of each ring on the scope to get approximate mounting position on the bases
3. When you get the scope approximately in the correct fore/aft position, put the other half of each ring on & position the upper split together, place the cap on, and then pinch the bottom studs together.....this will begin to tighten the cap on the rings (this is done with the scope & rings off the bases, in your hand)
4. Pinch the bottom studs together enough to get them into the bases; do not tighten bases screws yet
5. Carefully (the rings are not tightened into the bases yet) mount the gun & check for reticle alignment & eye relief
6. If you need to adjust eye relief or scope alignment, then add a small piece of masking tape as a reference point on the scope tube in front or back of each ring, depending on which way you need to move the rings; take a lead pencil & mark each ring cap & the scope tube at the mark on the cap as reference if you need to re-align the scope reticle
7. To (re)move the rings, insert a screwdriver in the slot in ring bottom stud & twist to loosen the ring & pop the cap loose
8. Using the tape & pencil marks, adjust scope position as needed; check again, & repeat as necessary
9. After eye relief & scope alignment are OK, tighten base screws, alternating turns on each side & note that overhang of the base on each side of the ring is even.
MM