I have a ported 1895 Guide gun. I want to use this gun in long range side matches in Cowboy Action Shooting, but the ports make it illegal. I was considering having the barrel changed by Marlin when I found a good deal on barrels at Numrich Gun Parts. I have a good gunsmith,but what I need to know is, other than length, are the barrels of a 1895G and a standard 1895 the same?