Normally, I would lock this thread as a useless resurrection of a 4 year old argument.
However, it is interesting to note my comments from 2010, and relate that today I do own a scope mounting kit.
Why? Well, I had a scope that wouldn't hold under recoil. It is a 7mm-08 Encore Pro Hunter handgun, topped with a Burris 3-12x scope.
I thought maybe I didn't have the proper torque, so I used an automotive in-lb torque wrench. They suck for the purpose, let me tell you.
So, I went looking for a dedicated firearms type torque driver. For the price comparison, I got the whole scope mounting kit including the driver for about $20 more than the driver alone.
The memory of this very thread was the biggest reason. Maybe I do need a kit, I thought. Maybe they were right, I said.
Turns out that, nope, the gun just has too much recoil for one set of rings to hold... or at least one set of Warne rings. They didn't need to be lapped and the proper (or improper) torque didn't make any difference. A second set of rings is what was needed. They also didn't need to be lapped.
Since I know have the kit, I have checked every install I've done since, 3 total. One cheap set of rings COULD have been lapped for contact area, but I didn't bother because they hold just fine with the proper torque. The other two sets of rings (both DNZ Game Reapers) needed no lappng either and hold just fine with the proper torque.
So, I used no kit for years and now I have a kit. What do I say today? You still don't need a kit. I recommend a good torque driver, but if you're not a mindless gorilla, you really don't need that either.