Looking at side-by-sides the two barrels together can be wide (bulky). How wider is a 20 gauge side-by-side compared to a .410? I'm thinking of getting a side-by-side but I don't want one that is bulky and heavy. I will be doing skeet and it will be used as a back up home defense gun. I don't want a skeet shotgun i'm looking into a coach or hunters side-by-side. I currently own a 20 gauge H&R Topper Jr. Thanks.