If you have one match rifle (rim or center fire) and want to use it in both scope and metallic sight matches, Weaver's QD rings and bases have proved repeatable to 1/4 MOA alignment at worst when switching sights. That's as close as one can get with the best hardware and ammo on this planet. All the popular rails are based on the Weaver QD system. First rail I had was made long before the A.R.M.S. company in the early 1980's copied a California gunsmith's design used in the 1970's for mine. The arsenal modified A.R.M.'s design. Competitive shooters have been switching sights on the same rifle for decades.I've never seen the point of Q/D scope mounts. I see literally zero reason to remove your optic all the time. Swapping a scope between rifles is going to be a pain in the arse, constantly rezeroing the optic.
The good ones are going to go back very close to POI, assuming they are mounted in the same spot each time. Just note the settings on the scope from rifle to rifle. And buy a good scope that can handle repeated adjusting.
Good QD rings are not a compromise.
Which is just another great reason to add to the herd.Larue rings are the best QD rigs IMO, but you will have a different zero when its placed on a different rifle. Even if it is the same model and caliber, barrel length, etc. Want to make sure you understand that.
I'm a big believer in Warne Maxima QD rings and see no reason NOT to use them.
Yes, that is 1 application. Especially significant if you have an optic that DOESN"T co-witness, like a 4x ACOG, and it is damaged. Also with mounts like those made by Larue, they return to zero better than anything else I've seen. Based on this capability, we replaced all of our stock mounts with Larue mounts. We were typically issued 3-4 different optics per man, which we could change depending on mission. I typically kept a 4x ACOG mounted on my M4 in the truck, but carried my M68 aimpoint in my backpack. There were a few occasions when we were out in the field and I (and others) took off the ACOG and mounted the aimpoint because requirements changed and we needed to do a hasty "house cleaning" operation that was unplanned prior to leaving the wire. The Larue mounts gave us the confidence that we could do this and not worry about radical zero shift.I was under the impression QD rings were also good for combat situations. If your scope takes a hit or gets damaged you can quickly remove it and use your iron backup sights. If the scope lens is fine you could co-witness, but if the lens is jacked, you'd have to remove the scope. So, in this case it would be more of a once in a time thing, not usual on and off.