Well I'm perfectly content with the pattens I get out of me 835 28" barrel and Star Dot .676 choke using Hevi-13 3.5" 2.25oz #7's at 40yds. I haven't ever used Nitros, and I do know from the patterns I have seen from guys that use them they are very good loads. But they are also very expensive, and they don't offer you up to $20 in rebates each year like Hevi-Shot does. And I also know that very few if any are turning in better patterns with their 835's and the same size 2.25oz #7 Nitro loads as I'm getting as well as others with the Hevi-13 #7's. Now that don't mean that it can't happen, but I know a few guys that were shooting the Nitros in either straight 7's or 4x5x7 loads that after seeing some of my patterns and what others have obtained using the Hevi-13 3.5" #7's that are making the switch from Nitros and to the Hevi-13's #7's. And you get to save $20 on buying 2 boxes with the rebates. But it's up to anyone and what they want to shoot. Both are very good choices.