I put extra effort into hiding myself and putting out a good decoy spread.
This combined with proper calling allows me to only shoot at birds within 40yds.
If I do things right, I get plenty of shots within this range and don't need to take longer shots.
If birds are outside of this range, my efforts are applied to getting them closer, not to pulling the trigger.
If I cannot get them close, I'm either not in the correct location or have screwed something else up. Again, I work to correct my errors, not to seeing how far out I can kill one.
I shoot plain steel loads (not hevi-shot, or bismuth), #3 Kent 1 1/4oz. IC factory choke tube. SBE.