If you plan on killing turkeys inside 40 yards, there's not much of a reason to buy TSS as long as you have a shotgun that patterns lead loads well. But TSS does come in handy when you must kill a bird at 40 yards or beyond. Because if a tom hangs up, there's no worse feeling than knowing you don't have an adequate load in your gun to kill that longbeard. I haven't shot a gobbler in my home state of Illinois with anything other than tungsten in years. That's not because I don't believe in lead; it's because killing an Eastern here is very hard and I don't want to miss an opportunity. If you hunt in a place where turkeys are tough, TSS is worth it. If you don't, stick with lead.