I can see myself adjusting not only the transfer port but also the regulator, not to mention the obligatory hammer spring tension adjustment. The Brocock Grand Prix I had gave me 22 sweet spot shots with the 18 grain JSP pellet (with no tweaking), and one-hole accuracy at 30 yards. That is my benchmark and I hope to increase the shot count to maybe 30 good shots at 12 fpe. I wonder if I can adjust the gun to be as efficient with 16 grain pellets? It ought to be fun to find oot.
darryl