I tried several moderators on my Brocock Contour. Huggett, Donny FL, 0db, and Weihrauch. They all quieted it down about the same, but the Neil Clague is the only one that had a significant positive impact on accuracy. Trying the 1st four on the Regal had no change in accuracy at all.I need an adaptor to use the the other 4 mods on the Contour. Could that have an impact on the results?