Hello Tennbuck,
I have an old Micro Med. in 257R, and a newer Micro Hunter in 243. Both are sub MOAs. 257 with hand loaded Noslers and the 243 will shoot .75" with factory Remington 100grainers. They are awesome rifles. When you factor in the quality detachable magazine, convenient and quiet top tang safety, and 60 degree bolt I don't think they can be beat. The only time I don't carry the micros is if I'm field hunting from a blind. Then I use the 280 A-bolt. I'm only 5'6" and these rifles are the perfect size. Don't hesitate about the barrel length. 20" is plenty for it in .308. You won't be disappointed.