A ring job in order

At about 200 rounds of Wolf Gold 6.5mm Grendel, and after firing fewer than 40 rounds of reloads, Bobbie Jo is in need of a ring job.

These are the rings originally provided by Alexander Arms with their bolt/barrel set. From left to right, the rings are nearest bolt face to farthest, so the ring closest to the hot gases is the one on the right, the one with most of its substance eaten away:



Bobbie Jo now sports a McFarland one-piece gapless ring, and the other ARs will probably have theirs soon too. But it makes me wonder, am I not lubricating the rings adequately for break-in? Can break-in of gas rings be improved with bore paste?


I can also see which parts I want in a spares kit for ARs, and which deserve periodic replacement.

BTW, the reloads were a) 120 gr Sierra Pro Hunters in front of 30.5 gr AA2520, 2349 fps, and b) 95 gr Hornady V-Max over 28.5 gr WC846, 2257 fps. At 6100 feet above MSL, with Alexander's (E. R. Shaw's) 16" stainless barrel, stock midlength gas tube.