I just measured the gap on my cylinder/force cone on my 6 inch Model 28 Highway Patrolman. It measures as .017 or even .018 (I can get the .018 inch in there if I force it a little).

I read on another thread that S&W spec is between .006 and .010. Is this correct? If so, that would mean mine is WAY too wide.

Ever since I started chronographing my 4 inch Python and my 6 inch Highway Patrolman, I've been shocked that my shorter Python can match or exceed my 6 inch S&W. THIS might explain why.

How can I have this corrected? Can a local gunsmith do it? Do I need to send it to S&W? What kind of money are we talking here?