Just a got a Remington 870 express I don't really know its cons and pros. I know it will do alright since I'm not an enthusiast with shotguns. I just want to find out some stuff and I'm sure my question may require more questions to answer it. Well I bought for clay target shooting and home defense. What is the spread diameter of 9 balls buckshot within a 50 yards range same question applies to the bird shot shells. Is there any table showing that in terms of distance , shell type and and the spreading diameter ? Also slugs effective range. I did some homework but better to get the experts on the loop. I totally appreciate very piece of information so I can take that to my kids. Thanks.