It's very easy to see just where the core of your pattern is at 20-25 yards. When I am sighting-in a new gun, scope, choke, shells, etc. I shoot at 25 yards first. I've found that if I can get it just right at that distance, it will take little if any adjustment to be on target at 40 yards. "just right" being the key words. If you're off just a bit at 25, it can be much more at 40.
It's also a very good idea to know just what kind of pattern your combo shoots at different distances. If you sight-in at 20-25, a shot or two at 30-35 is also a good idea. Being comfortable and confident with your hunting set-up is so important. Practice at different distances may also help you to judge the distance of a shot when you're hunting.
Being able to judge the distance of a bird and knowing just how you and your gun perform at that distance can help you decide to either take the shot, try to call him closer or if he won't come in, let him walk. Any of those decisions, make for a successful hunt.
Thanks,
Clark
Thanks,
Clark