I got rid of a Browning A-bolt once I shot my Ruger Hawkeye---mine is a sub-moa shooter-------there is nothing more rugged and reliable than the Ruger.
Yes --they make 30mm rings----just remember the front isn't as tall as the back. Buy them from Midway a la carte.
http://www.midwayusa.com/browse/Brow...705***11686***