I use a 390 Silver Mallard as my waterfowl and deer gun. I had a friend I was starting on turkeys and picked up a Primos Jellyhead on a whim with a gift card to use in it. It shoots as good as any gun with plain copper plated 6's as I've ever seen. I'm sure it would do better with hevi-13, but since I use it mainly as a back-up gun.... I don't fool with it. I shot a bird with it last year as a matter of fact.

The difference in performace between a stock flush fit choke and an aftermarket extended choke of any make, will almost certainly be worth the price. I use extended brileys (non-ported) for all my guns with bird loads. Turkey chokes I tend to go Pure Gold.... but that Primos did impress me.