Hexagonal Boron Nitride (hBN) is also known as “White Graphite” has similar (hexagonal) crystal structure as of Graphite. This crystal structure provides excellent lubricating properties. hBN is much superior to Graphite and has following characteristics:

•Excellent Lubricating Properties due to low Coefficient of Friction at 0.15 to 0.70
•Good Chemical Inertness
•Electrical Insulator
•Thermal Conductor (result: better heat dissipation)
•High Temperature Stability, 1000o C in Air, 1400o C in Vacuum and 1800o C in Inert gas
•Low Thermal Expansion
•Low Dielectric Constant
•High Load bearing properties
•Non-Wetting: hBN is not wetted by Glasses, Salts and (most) metals, therefore it provides strong resistance to chemical attack Easy Machineability (in hot pressed state). Complex shapes can be machined from hot pressed structure.

hBN, 98% Pure, APS: 0.5 micron
0.4oz in tube.  0.4oz = approx 170 grains

How much is that?  It’s about a 1/3 cup.  At 8 grains per FOUR hundred rounds, a reloader should have enough prodcut to give you significant data.  This sample size will produce roughly 8000+ rounds.

hBN, 98% Pure, APS: 0.5 micron

We choose not to carry the hex-boron at the NANO (nm) particle level due to its inherent size, it can be absorbed through the skin.  At such small particle mesh, one good whiff has the potential to coat your entire sinus cavities.  Not sure this would be the best thing for you.   It was recommended by the manufacturer to use the 0.5 micron size for dry bullet tumbling. 

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