Of the 25 or so rifles in my safe, the m1a is the last one I'd grab during deer season. Not because I don't love the thing, but because it isn't designed for hunting. If you're looking for a do-it-all gun, join the club!
And after this many (though 25 rifles is not many in these forums), I must admit that I still haven't found it. Instead, I stumbled into an addiction for walnut dressed steel tubes.
As for the 1000 yard shots, all I can say is good luck.