I've had a 629-4 Mtn Gun since they first came out in the early 90's. Mine now wears the Hogue X frame grip, and I installed a Patridge front sight and did a trigger job by installing an 11 lb Wolff rebound slide spring.I'm not sure of the exact count, but I figger I've put at least 10,000 cast boolit rounds thru this revolver in the past 25 years.