I would suggest you get a measurung tape and do some comparisons between the RBL and SKB. I don't have either gun so I have no idea how they match up stock wise but you may find out some useful information. LOP is a measurement that is useful when you are trying to get a gun to fit like another but other variables come in to play too, especially if they are two different manufacturers. If one gun has a pistol grip and the other a prince of wales or an english. Pitch angle, comb height and, as Ted mentioned, number of triggers. I have several doubles, all with 14" LOPs. The one with the POW fits just right if, after months in the safe, I remember that little round part fits in my palm not behind the heel of my hand. Have fun working it out! Kurt
