647 gritty trigger

[PlumberjimC]

With something to hold up that long, heavy barrel, it shoots great, but the trigger is gritty enough that I'm sure it's causing accuracy issues.

What is the best way to smooth, or even lighten, the pull on a stainless K-frame?

Been gone for a while, so this may be an old question. I did a search and came up nada.

Thanks