I coat just about all the bullets I load for serious use with HBN. As a Savage shooter in part, I find it helps with the fouling that Savage-rifled "cattle guard rifling" barrels are extremely prone. I'm happy with my bullet coating regime. But I have questions about barrels that probably takes someone smarter than me to answer (searched Internet a lot, can't find these answers):
1) Does one need to coat a barrel separately, or will shooting exclusively coated bullets get the job done?
2) If no to the above, how to coat? I use 0.5 micron HBN from Tubb and Bullet Coatings mixed with 99.9% alcohol as a suspension. Two passes with a wool mob, couple of passes with a bristle brush to embed, then another pass with a wool mop.
3) Would using Kroil as a carrier work better? Leaving overnight then a pass with a dry patch? Kroil being fairly volatile it will mostly be gone but I suspect it may be a better carrier than alcohol.
4) Is 0.5 micron small enough? I hesitate to use the smaller "nano" grind given the health warnings on Bullet Coatings.
5) Finally, I understand HBN is NOT hygroscopic, although it will clump due to particle size. Is that correct?
I understand a little of tribology and how HBN works but if anyone with an engineering/scientific background actually knows the answers to the above I'll sincerely appreciate it.
Thanks.
1) Does one need to coat a barrel separately, or will shooting exclusively coated bullets get the job done?
2) If no to the above, how to coat? I use 0.5 micron HBN from Tubb and Bullet Coatings mixed with 99.9% alcohol as a suspension. Two passes with a wool mob, couple of passes with a bristle brush to embed, then another pass with a wool mop.
3) Would using Kroil as a carrier work better? Leaving overnight then a pass with a dry patch? Kroil being fairly volatile it will mostly be gone but I suspect it may be a better carrier than alcohol.
4) Is 0.5 micron small enough? I hesitate to use the smaller "nano" grind given the health warnings on Bullet Coatings.
5) Finally, I understand HBN is NOT hygroscopic, although it will clump due to particle size. Is that correct?
I understand a little of tribology and how HBN works but if anyone with an engineering/scientific background actually knows the answers to the above I'll sincerely appreciate it.
Thanks.
