Hello I'm new to the gun forum part of BR but not to guns. I have been carrying a gun professionally for 30+ years (open and concealed). For concealed carry I have carried semi-auto pistols in the size range of the Colt Gov"t Model Series 70 MK IV and teh Beretta 92 series. The revolvers I have carried range from a 2 1/2" S&W model 66 up to a 6" Colt Python. I find it is relatively easy to carry a revolver with a barrel from 2" to 4". My nnormal off duty guns today seem to be a 3" S&W model 65-3 or a 4" Colt Python. The best advice I can give is no two people are the same, what works for one may not work for another. The secret to concealed carry is a combination. The gun, the method of carry, the proper holster, and the clothing all combine to make an effective carry system. I have a large tote of old holsters (duty and concealed carry) that I have used over the years and for me the OWB holsters work best. I love my Bianchi pancake style holster for my 4" Python and 4" S&W 686. With a light jacket or a 511 vest thes 4" revolvers conceal very well.