Re: 2011 Les Paul 57' RI Spec Sheet
Gibson is so all over the place on necks, especially on historic's. Your measurements are larger at the 1st than I would have guessed and smaller at the 12th. That's not much of a change actually, which could be a great thing if your hand works well with the .925" 1st fret size, which is what it sounds like. I've learned a lot about neck shape and size vs. playability lately, which only helps me buy better moving forward.
In reality and for historical accuracy, necks should get smaller as you move through historic time frame from R7 to R0.....not even considering R2 - R6. Even though the real deal Lesters varied in size, they did fall within a defined range that is well documented among surviving original 50's examples. It doesn't seem too hard, to me, for Gibson to CNC a neck at the upper end of the average for each given year and then leave room for the hand shaping and sanding, like the originals, which would end up mostly within the average range. But, what do I know? Look how well Gibson is doing right now.
I do feel fortunate to have an R7 in a very unique finish with a neck more like an R9, which fits my hand better. It just so happened that luck or fate worked in my favor this time. I could have easily ended up with a dog that had a baseball bat neck, since I couldn't play it first. That normally doesn't work out for me.