I've had an A-Bolt II in 30-06 w/Boss for about two months now and have decided it will become my main hunting rifle. I've got the Boss-CR (non-ported) Installed and once I got it dialed in it groups a little bit better than my Tikka T3 at 100 yards, both being under 1/2 MOA shooters. The action isn't going to be quite as smooth as the Tikka, but what is? I do however like the short 60 degree bolt lift, helps with getting the next round in the chamber faster and scope clearance. They're glass bedded from the factory and the synthetic stocks are actually pretty good quality, compared to other factory offerings. Also completely free floated to the receiver, spaciously might I add. I can't really say one bad thing about these rifles. Also, the triggers are great, right up there with the accutrigger and Tikka trigger.
At $500 I would definitely jump on one. I wouldn't worry to much about re-barreling it, any reputable & competent gunsmith can easily change out the barrels on one.
I like the 30-06 so much just recently I picked up a older A-bolt I in .280 Rem for $300. The guy had it professionally Cerakoted and then spray painted the
WOOD stock. He couldn't move it after he customized it, offered him $300 and now it's sitting in the safe. Just found a factory synthetic stock for it for $60. So now I've got an absolutely amazing rifle for about the price of an entry disposable rifle. It shoots around 1 1/2" at 100 yards, but I'm sure the groups will shrink when I put it in the new stock since the stock that's on it now touches the barrel a little bit on one side.
Like I said earlier, I've got now 2 different A-bolt's and I'm thoroughly satisfied with both.
Here's a pic of the .280 Rem in it's current state, it'll look much better next week sitting in a OEM synthetic stock.
EDIT:
Forgot to mention, the recoil pads are good and soft, better than most factory offerings. To me the pads seem almost like a pachmayr decelerator pad. Also like I said any good gunsmith can swap out the barrels for you, so I wouldn't let that dictate your decision.