I admit I get a little obsessive about it especially when I know the gun is capable. However how important really is it ? I ask as I’m struggling with a 700 mm .30 mk2 to get it better than 870-890. With a 18-20 fps spread it still will make one ragged hole at 55 yards. For general hunting purposes how far out do you think I can shoot before that really starts making a significant difference? Still making small tweaks. My M3 and Maverick are much tighter spreads but I think I may be worrying more than needed ?