I was in the market for a new set of rings recently and ended up getting a set of Kelbly's rings. Beautiful machining at a premium price. I then started thinking critically about why super high quality rings matter.
Do we have the wrong assumptions around the need for high quality rings? By using and paying a premium for perfectly machined rings, we are assuming that the rest of the system is perfectly aligned. In other words we assume:
1. Zero vertical flex in the scope rail when mounted to the action.
2. Perfect straightness of the scope rail - at least for the distance between the rings.
3. Perfect straightness and roundness of the scope tube (this is probably the biggest assumption)
If any of these assumptions are not true, we introduce stress when mounting a scope. Let's factor elements that do not contribute to stress such as strength of the rings, additional mounting points, etc. Unimounts clearly eliminate #1 and #2. Lapping rings may compensate for errors introduced by #1 and #2.
Rather than trying to seek perfection in the rings themselves wouldn't it be a better idea to mount the rings to the firearm and then bed the scope into the rings using epoxy? This bedding process would compensate for machining errors in the ring, base, and scope.
I tried bedding rings about 10+ years ago as an experiment. I used a cheap set of Burris Xtreme Tactical rings (Chinese made) and used J-B Weld as a bedding compound. I applied lithium grease to the scope tube as a release agent. I aligned the scope properly and just barely tightened the ring tops. After letting things cure for a few hours, I removed the ring / scope assembly and tapped the rings with a plastic-tipped hammer to pop them off the scope body. I then trimmed off the excess J-B Weld and cleaned the scope body. After letting it cure for about 24 hours, I reassembled everything for a perfect stress-free fit.
For some reason, I stopped doing this on other rifles. Possibly because I have no evidence that stress free mounting makes any difference in any way. It did make me "feel" a bit more confident about my gear.
I'm curious to hear other's thoughts.
Do we have the wrong assumptions around the need for high quality rings? By using and paying a premium for perfectly machined rings, we are assuming that the rest of the system is perfectly aligned. In other words we assume:
1. Zero vertical flex in the scope rail when mounted to the action.
2. Perfect straightness of the scope rail - at least for the distance between the rings.
3. Perfect straightness and roundness of the scope tube (this is probably the biggest assumption)
If any of these assumptions are not true, we introduce stress when mounting a scope. Let's factor elements that do not contribute to stress such as strength of the rings, additional mounting points, etc. Unimounts clearly eliminate #1 and #2. Lapping rings may compensate for errors introduced by #1 and #2.
Rather than trying to seek perfection in the rings themselves wouldn't it be a better idea to mount the rings to the firearm and then bed the scope into the rings using epoxy? This bedding process would compensate for machining errors in the ring, base, and scope.
I tried bedding rings about 10+ years ago as an experiment. I used a cheap set of Burris Xtreme Tactical rings (Chinese made) and used J-B Weld as a bedding compound. I applied lithium grease to the scope tube as a release agent. I aligned the scope properly and just barely tightened the ring tops. After letting things cure for a few hours, I removed the ring / scope assembly and tapped the rings with a plastic-tipped hammer to pop them off the scope body. I then trimmed off the excess J-B Weld and cleaned the scope body. After letting it cure for about 24 hours, I reassembled everything for a perfect stress-free fit.
For some reason, I stopped doing this on other rifles. Possibly because I have no evidence that stress free mounting makes any difference in any way. It did make me "feel" a bit more confident about my gear.
I'm curious to hear other's thoughts.