In a brief conversation with David Manson yesterday I was told that a .3125 reamer with one pilot would cost about $125. The .314 is the standard size but he would grind one to my desired size. Delivery would be within a couple of weeks. He said it might be difficult to take so little out of the Ruger with the reamer.
He suggested that I try to find a machine shop with a Sunnen Hone and consider having the cylinder honed professionally. This method of honing would assure concentricity.
Some questions have come to mind:
How many pilots are needed? They appear to be available in 5/10,000 increments (ie .3090, .3095, .3100, .3105 etc.)
What sizes for the pilots? I slugged only one Single Six (I own several) using a soft lead round ball. All six chambers came out pretty much right on .3110. Do you buy that size pilot or slightly smaller?
What other questions need to be answered before purchase?
BenT - I considered the .313 but I think I would rather try to keep it a little tighter than the bullets. I do not know how precise this operation will turn out and I do not want the throats to be oversize! I would not be adverse to sharing expenses - it appears that there is a 45 throat reamer making the rounds these days with good success.....
Ward