The Title is a bit tongue in cheek, but I had encountered something Luther had written on the extent of the atonement and when placed next to his writing of the sovereignty of God in salvation, it sounds quite Calvinistic.
"And it is this very state of the truth, that of necessity proves "Free-will" to be nothing at all; seeing that, the love and hatred of God towards men is immutable and eternal; existing, not only before there was any merit or work of "Free-will," but before the worlds were made; and that, all things take place in us from necessity, accordingly as He loved or loved not from all eternity. So that, not the love of God only, but even the manner of His love imposes on us necessity. Here then it may be seen, how much its invented ways of escape profit the Diatribe; for the more it attempts to get away from the truth, the more it runs upon it; with so little success does it fight against it!" Section 101 of The Bondage of the Will http://www.truecovenanter.com/truelutheran/luther_bow.html
"God will have all men to be saved” (1 Timothy 2:4), and he gave his Son for us men, and he created man for the sake of eternal life. And likewise: Everything is there for man’s sake and he is there for God’s sake in order that he may enjoy him, etc. But this objection [to God’s sovereignty in salvation] and others like it can just as easily be refuted as the first one: because all these sayings must be understood only with respect to the elect [emphasis in original], as the apostle says in 2 Timothy 2:10, “All for the elect.” Christ did not die for absolutely all, for he says: “This is my blood which is shed for you” (Luke 22:20) and “for many” (Mark 14:24)- he did not say: for all- “to the remission of sins” (Matthew 26:28Open in Logos Bible Software (if available)). [Martin Luther, Lectures on Romans, translated and edited by Wilhelm Pauck (Philadelphia: The Westminster Press, 1961), 252.]http://www.apuritansmind.com/tulip/limited-atonement-compiled-by-dr-c-matthew-mcmahon/