That's why I went with .357/38 as well JP. Quite pleasant with .38special recoil wise but the awkward hold and brutal trigger travel makes it a stunt gun to shoot well.
I was considering marking the front blade but came to my senses and passed it on to the next guy to try....... these guns should be available for rent.
Is 6 inches at 17 yards your best ever group or an average? You should make a video shooting it and show everyone your sight marks and how well they improve the achievable accuracy.
Anyone considering one, make sure it's the newer style if it's used. They made some improvements to the brutal trigger travel so that it's just awkward instead of brutal.
Also get rid of the trigger guard as it jams up your finger as you try to sweep it through it's brutal downward arc.