The MAIN reason I went to Nitro ammo is because I GOT FED UP with all the big 3 changing their load recipes every 2 or 3 years. [:@] For a few years, Federal shot best, then they changed SOMETHING WITHOUT TELLING US, [:@] then Winchester shot best for a few years, then they changed SOMETHING WITHOUT TELLING US, then I was back to Federal again, and well you get the picture. All these unannounced changes, and their resulting change in pattern density resulted in causing me to lose turkeys. I finally got fed up with that crap 2 years ago and spent WAY TOO MUCH money finding the right Nitro load for all 3 of our turkey guns. With Nitro stuff, if you order a 510A 4x5 nickel load, you get the SAME THING you got last time, no surprises. That was the selling factor for me.