I just obtained a second hand XCR. My intent is to disassemble, clean (though it looks pristine) and thoroughly lube with Mobil-1 and run at least 300 rounds of American Eagle through it like I'm breaking in a new one. One problem has arisen though, everyone seems to be out of American Eagle. I can find PMC, Privi Partizan and some Lake City XM193, are any of these acceptably equivalent to the American Eagle for break-in?