Where, in any competitive format, do MC/QC actions hold superiority? What advantage(s) do the more complex QC’s bring beyond what they call “QC”? Recognizing here, there’s a big difference between QC’s with non-conventional barrel designs like the MRAD or DesertTech vs. standard actions which simply use headspace control plus locking clamps/screws on shouldered prefit barrels, such as AI, Seekins Hit, WTO, Zeus…
Their advantage is the novelty of quick caliber/cartridge changes, which as mentioned multiple times above, is relatively moot - we still need to rezero, so whether it takes me 10min or 2min, is really a distinction without a difference. I really won’t be in the field hunting coyotes then suddenly - oh look, a bear! - then change barrels… But on the flip-side, there is extra cost, limited market of manufacturers, limited aftermarket, extra weight and extra complexity in the designs, and no improvement in performance, BUT with at least theoretical, if not demonstrable potential for reduced performance… all to do something nobody really wants or needs… THOSE are the reasons I personally don’t want the MC/QC rifles/actions and will use other actions with shouldered pre-fits and interchangeable bolts/bolt heads. Impact, Ruckus/Tenacity, Terminus, LP, Bighorn, Seekins, Bat, etc - they all use drop in barrels which require minimal tools to relatively quickly change barrels/cartridges/calibers, and several of these have demonstrated successes and superiority in the field and in competition.
