I picked up a clean Savage 99A in .308win. It has the internal aluminum magazine. The magazine was pretty sluggish at first but oiling it liberaly and repeated loading/unloading helped.

Only now the third round in the mag sometimes doesn't rotate up. Working the action with authority usually causes it to function but that one round is still sticky enough for me to not trust it's reliability.

I will try some gun scrubber next once I am able to get a can. I don't want to try taking it apart to clean. Any other thoughts?