Originally Posted by Virginian
Actually, the Light Contour barrels are made for field use and have the regular port sizes, and the Target Contour barrels are the same weight and profile but have the Skeet sized larger ports for target shooting and the recent propensity towards mouse fart loads, in the 1100 model barrels. I have not seen an 870 barrel marked anything but Light Contour. There is a subtle and slight difference between the Light Contour and the original fixed choke barrels, and a bigger difference between the Light Contours and the regular RemChoke barrels.
Another option would be to have an original fixed choke barrel retrofitted with choke tubes by a reputable gunsmith like Mike Orlen. I have had one of those done too, and it works and feels very good to me. If you want something shorter than what you have it can be shortened to the next rib post at the same time for almost nothing.
The light contour is a tapered barrel vs the lightweight which is the same thickness all the way. A good comparison to the lightweight would be the security barrel on a Maverick/Mossberg. The light countour is thick near the receiver so you don't get burned when reloading.
The difference in the light countour and a regular ventilated rib barrel might seem nominal but when when you are an Old_Crow the few ounces seem like pounds after a couple hundred rounds.
Lengthwise I hope the 20 ga barrel is built on a 12 ga frame since the shells are the same length.
The building of a great skeet gun is nothing major in any one spot. It's a couple ounces here and there. Otherwise I would just buy a double barrel and a red wagon to haul it around.