The only thing I use a bore snake on is my shotguns, after I spray G-96 down the bore and leave it for 2 hours, I pull a snake through the bore 3-4 times, chamber to choke, it takes plastic and crud both out. But I never use a bore snake on rifles or handguns.
And I sure do not spray any lubricant like Break Free down a bore, saw what it does to a match gun in a "pink slip" head to head match on the range where I was the Match Director / Range Master.
I use and reccomend Sweet Shoter on the match guns I build. Plus I do reccomend a breakin for new barrels or barrels I have cleaned back to bright steel with something like a Foul Out, a reverse electro plating process to remove copper, used to be called a 5 cent Foul Out but now costs about a dollar.
Ed