Got myself a nice used GP-100 a short while ago. I've got some super help from the guys over at the Ruger forum. Iowegans IBOK was a great help in changing out the factory springs with Wolff springs and going through the internals. It now has a really good smooth trigger pull in double and single action. I shot it last weekend before I worked on it and found it easy to shoot well and very accurate. The grips fit me real well and absorb recoil well, but I would like to find some nice wood grips for it. I wll be shooting 99% downloaded .357 mag brass through it. It has a Millet front sight which is real nice. Much better than the factory sight.