I've had good luck with R-22 in my M700 and any 180-200gr bullet I stick in it. Load workup has been finding where the lands are, picking a seating depth to start, picking a charge of 22 over a 215, shooting tight group, loading up enough to hunt with. Three totally different bullets in a row have worked out just exactly like that. 58gr with 200's to 60 with 180's. Not top end loads, but velocities have been right where I expected, with consistency and accuracy to spare.
