Rod bearings are readily available in .010, .020, .030, .040, .060. I have seen them in the past as much as .080 but I would not myself be inclined to go that far, lol. I am a fan of careful precise machine work. The last crank I did was magnafluxed, cut to .030, indexed and equalized, drilled the snout for threads and balanced and I think I was around 320 or so. The 261 I built two years ago is what I put that crank into, it is a very modified motor (GMC rods, forged pop up pistons, Schneider cam other stuff, lol), and I run it pretty good with no issues so no worries if you have to regrind the crank.
