Graphite on an AR - wild!
Boy I wish that test report had the brand names...They tried graphite on an AR? Why not, they didn't own the piece or anything.
Iluv, I couldn't read your link. Rule of thumb is, if it works it's okay but if you're in unknown territory be cautious. I don't consider myself a "gun bunny" but I sure am an "armchair ranger." As an armchair ranger my needs are far less demanding than the courageous servicemen in combat. That's why they're the guys to ask about the lubes they use.
waterhouse, you caught me out. The problem we engineers have is that we want to qualify everything but then you end up with a half-inch thick report that would satisfy everyone but they don't read it. So we gotta simplify stuff so that we don't exasperate people more than we usually do. Another problem we sometimes have is seeing the forest because we're studying the shape of the needles on the trees. I want y'all to be a little skeptical about what I say on lubes, that's why you should ask the manufacturers of the lubes or weapons. Or the people who fire millions of rounds - remember Lubriplate on the M1? An engine lube that worked just fine for the service. I've got an email in right now to FTI, manufacturers of Tetra.
An engine does wear in. I'm surprised to hear 1500 miles though. I was told 200 miles when I bought my car. 200 miles / 200,000 lifetime miles is a tiny amount of wear time. I read a post re: CZ bolts where an experienced guy said to run a thousand rounds through it and it would be smooth as glass. I read people talking about 10,000 round lifetimes of barrels & I figure 1,000/10,000 is way more wear in time.
The "junky" RRA? A little grease is good, I use it on the Bushmaster and Bushmistress, a little Tetra on the rails.
You can run a fluoropolymer lube drier than Break-free, so comparing the two is a little difficult. I'll take Jeff's opinion everytime on Break-free. I still want to know how an NCO describes to his soldiers how much lube to use. 2-3 drops? 2-3 drops where? On the bolt? On the bolt & bolt carrier rails? Do the gas rings get one of the drops? Bushmaster says to use a generous amount of lube on the bolt. What does that mean?
I'll shut my pie hole now.