Im looking for a shoulder holster setup for a ruger GP100 4". It doesnt need to be real fancy but nothing cheap (crappy). Im about 5'10" and 145lbs. This will be used mainly in the colder months, unless I have a particular reason to be wearing a jacket during the summer (I really wish I had more reasons to wear a jacket during the summer) Has anybody here used one for a GP100 or similar sized revolver that they could recommend? Thanks!