Certainly Savage should have gotten all that stuff off of there after the shot blasting operation, but I don't feel there is anything to really worry about. I would go get a dental pick or some similar tool and just flip those little boogers out of there and call it good. It is difficult to imagine that any would be in the recesses for the lugs or anything but I would look real well for any strays. Makes you wonder how many rifles are floating around with that stuff still stuck to them. Most folks never ever take the barreled action out of the gun anyway so who knows.
"A Liberal is someone who doesn't care what you do, as long as it's mandatory". - Charles Krauthammer