I have no experience with the undertaker choke your currently using but I have shot many shells through my hevi 13 choke. It has been the second best performing choke I have overall behind my indian creek. However it does digest hevi shot mag blend better than any other choke I own. On my most recent pattern testing session the hevi 13 choke put up a 275 hit in the 10@40 with the mag blend 3.5" 5,6,7. It is a good all around choke for my gun.(835). Is it better than your current set up?? There is only one way to know for sure. I'd say if your confident in your current set up I wouldn't change it. I agree components used by manufactures often change and so will our patterns. Hope this helps.