35bore
PTFE = polytetrafluoroethylene, Teflon being one of the brand names. It can work well as a factory-applied coating but, in my experience, quite poorly when placed in suspension in oil for small arms. One big reason being its tendency to separate from the liquid medium. There is a reason why Break Free CLP is sold in black containers and it has nothing to do with fashion!
We were supplied with Break Free when the Steyr AUG was introduced but the armourers refuse to use it, favouring a local reverse-engineered version of an old Hoppe's No. 9 recipe. I was able to keep my Steyr in perfect condition with that same product (privately purchased) whereas I always had problems with surface rust around the stock bolts (and heavier fouling), when using Break Free.
I once had to do a very quick clean, take a vehicle to fill up the tank and get back to our squadron's weekend accommodation on base so that I could return the rifles to the armoury, at the end of a weekend shoot. Another guy who used to make himself out as a shooting expert was still working on his rifle when I got back because he was too cheap to bring his own stuff from home.
Next time the weapons were issued, my rifle was perfectly clean with zero evidence of corrosion, which would not have been possible in the time allowed with the black-bottle stuff. I find it difficult to believe that any other oil with PTFE (such as Rem Oil) would be much better for small arms. These products may work perfectly well in artillery pieces, and I would love to see the occasional burn off of accumulated PTFE in the barrel with a big gun!
Pondoro
I still use that local product as a bore cleaner at home but always use Ballistol near timber stocks and only use Ballistol in the bush. It also works extremely well on insect bites!
Same old beaten conversation, point is, everyone has there favorites and it's not always the one we would choose.
