Bet guys with 12s chambered for 2-1/2" could put up a fuss about those @#$%^! game hogs who use 12s with 2-3/4" and 3" chambers, too! How much quieter is a 2-3/4" 12 mag shot out of a ported 26" barrel than a standard 3-1/2" load from a gun with a 32" barrel?
If you want quiet in an area, fine - ban shooting altogether (and jet-skis, snowmobiles, etc. as well). Easy to enforce and not discriminatory. But picking and choosing between "acceptable" guns and loads pits hunter against hunter, puts a real burden on enforcement folks, and seems a bit petty as well.
