Reloading

Any of y'all out there loading lil gun in a 41 mag Contender? I'm using Hodgdons load data for the Hornady 210 XTP with the Sierra 210 JHC. I started at 21g (1.5g below their listed Max). I'm getting flat primers and sticky cases. When I looked at their data for H110 the max is 1.6g higher than the data listed in my Contender load manual. Curious if any of y'all have experience with this gun and components