Sorry if this is the wrong place for this post. The question I have is, I have a Charles Daly 12ga, it has the short 18 1/2 barrel, rifle sights and I am shooting 2 3/4 in shells. It is sighted for 75yds which is about the distance I expect to see deer. There is a chance I may have a 100yd shot. How much will the slug drop on me? Will be in a ground blind more often than my treestand. Thanks, Tim