HBN In Reloading Die

[rklein]

Anyone ever thought of or applied HBN into dies? Is it slick enough that you wouldn't have to lube case? or would it transfer onto brass?

 

[bdale]

I don't see why it wouldn't work, never tried it but the stuff was developed as a mold release agent under extreme pressure and heat and by the cosmetic industry for women makeup. Women have been smearing this white graphite on their face for years and didn't know they were using a lubricant . Its a base for their rouge and eye shadow, was also told by a lady in the cosmetic industry that the different size HBN was for reflecting light to give your lady that youthful appearance

 

[heymarine1833]

works great in an alcohol solution. actually painted the powder measure sliding parts with it. as cheap as it is, i wonder if it would be a perfect case lube? i will try that tonight and see what the results are

 

[heymarine1833]

been using e-juice bottles to put hbn solution in. has a dripper cap also. in a 36ml bottle, add a small screwdriver full of hbn and fill with 91% alcohol. shake before use.

 

[heymarine1833]

just dropped a bit of hbn solution on 4 bone dry cases and let dry. ran them through the dillon and it worked very well plus they are dry. it seems to be a perfect dry lube

 

[rklein]

Wouldn't you want to keep HBN off cases and chamber? don't you want your case to grip a bit upon firing? That's why I was wondering if it would transfer from the die to the brass. Good to hear it will work though.

 

[strut64]

Please let us all know what HBN stands for.

 

[Mega]

Please let us all know what HBN stands for.

Hexagonal Boron Nitride

 

[heymarine1833]

currently using HBN as a replacement for moly as i think it works a lot better. the case will grip the bullet no problem with it plated or coated on HBN or moly. for a test, load one up and then try pulling the bullet with a puller. it's in there just as hard as an uncoated one. i dont worry about it. it's fine.

 

[rklein]

I was referring to the case gripping the chamber wall.

 

[CPorter]

you don't need the brass gripping the chamber walls that much. Brass gripping the chamber walls causes the brass to stretch from web instead of the shoulder moving. The brass acts as a gas seal and needs to distribute the force equally around the chamber and bolt face. To do that it needs to move. Varmint Al has a finite element simulation on his website that shows this and also what the lower limit of the friction between the brass and chamber needs to be to support the brass. It's low enough that most lubricants won't get it there.

 

[Syncrowave]

I was coating bullets with HBN for a while, and I don't know if I was doing it wrong, but it started to transfer from the bullets to the bullet seating stem in my micrometer seating die, and this was causing the bullets to stick in the die (some lubricant!), and changing seating depths and all sorts of problems.

 

[fgregorio]

I use hbn coated projectiles. And I use it as a lubricant to resize the necks of the cases. I simply use a small container with soft tumbling media and hbn mixed in. Dip the case necks in it. The reason why I do it is to, at the same time, coat the inside of the neck with hbn so that I reduce any galling on the projectile's bearing surface coating. Keeps consistency up.