Quick question, does pattern not come into this? My Beretta pattern is much more even with ¾ than with full using same cartridges at same distance, would that not be more helpful than tightness of pattern? I’ve also noticed that ¾ patterns more even my with both factory and briley extended chokes on my Franchi SA which I think uses a beretta choke (Mobil?). Local gunsmith who fitted my beretta seemed to feel that Beretta optima HP chokes that come in my clay gun as standard were tighter for the designated construction than he would expect.
Appreciate views, I’d quite like to have a good go at ABT which I think is similar to DTL?