just wondering is a 20 ga using 3" shells good enough to kill turkeys and if so,at what distance are they best at..my ole' 12 flat lays them down but i came across a deal on a 20 and if it holds as good pattern as my ole' grandpappys did when i hunted with it ,,whooo-weee the gobblers better be-gone ..what do y'all think aboout using the 20