Groupings only really matter if you're using an optic as you can't go off of one shot for zeroing your optic, just checked my measuring wheel and it measures in feet not yards, my bad! But 2" grouping at 50 yards is certainly nothing to be sniffed at! Its always nice to know exactly where your shots are landing at a given range, I play mainly CQB but at my local site there's a lot of opportunity for 20-40 feet engagements, but grouping is mainly to test the accuracy of the gun, shoot at the same spot 12 times, and whatever your grouping is, you know you're guaranteed to hit them if the area you've shot into is within your grouping