To me the challenge of using iron sights is the challenge of trying to get the deer closer not trying to see ifI can make a shot at a deer that is 100-200 yards away. I have always been able to make very clean ethical shots with my bead sighted Remington 870 Wingmaster. None of these shots have been longer than 50 yards. The buck I took this year was at 20 yards with a double lung pass through. The challenge of taking that 150 class buck was waiting for him to come that close so I knew I could take an ethical shot. To me it would not be as challenging to take a 100 yard shot just because I could. I love watching deer up close not through a scope. To each his own though because a challenge to me may not be a challenge to the other guy in the woods.