I have a rifle i use for NRA Cross the Course High Power built with the Oly parts for the wssm line. Mine is chambered in 6BR. the rifle shoots 1/2 moa out to 600 with ease, but the quailty of the Oly parts sux.
About 12 years ago a friend set off a full tube of primers on his 650. It all went up as designed, blew a hole in the sheet rock!! I'll stick with 100 round tubes.
If you are looking to add a right hand bolt release to your rifle take a look at this set up. keeps your finger out of the trigger area
http://www.compasslake.com/RHBR.htm