I never tried nitros, but I do have an 835 with a jelly head choke. I used 3.5" 2.25 Oz #6 Hevi-13s and got pretty decent patterns at 40 yards. Dropped a bird in his tracks at a laser measured 39 yards last year. For the performance I'm getting with the Hevi-13s, I don't see the need to drop more coin on the Nitros. The Hevi Shot definitely performs better than lead loads though, so I'll pay for the Hevi-13s.