Applying Hbn?

[rogn]

Mc- For what its worth--- "Fugi " type fishing rod guides are made from fused Aluminum oxide, which is way up the hardness scale, in sight of diamond.. But its fused and polished, "slicker than snail snot" The character of an abrasive demands that it be harder than the material its going to cut(abrade), so if you just turn this around then the materials were using are not as hard as the ceramics and cannot cut it. Finally no sharp edges no cutting. Typical abrasives, sand paper or a grinding wheel all have sharp edges so they cut. Fused ceramic is smooth slick and V hard. Whether there is an advantage over BBs, I dont know, maybe cleaner harder impacts and better impact coating with the bullet?

 

[jo191145]

I don't agree, Joe.
We've been using hBN impact coated projectiles through treated bores for better than 22 months now, and the difference with and without is highly discernable using the Hawkeye Borescope and two control rifles, those being Swiss k31s.
We have a number of barrels extremely difficult to replace and a couple nearly impossible to replace, and if we're doubling and even tripling barrel life, then its definitely worth it.

zfk55

Are you saying you can tell the difference in the bore between HBN coated projectiles that were impact plated with media and those that were impact plated with HBN without media.
Really??? You pullin my chain?

 

[Heavies]

I am thinking that the ceramic media is not 'breaking off' and embedding into the bullet jacket; the same as using any other hard substance, such as steel BB's. Therefore, no abrasive compound is being introduced to the bullets or the barrel. If I am not mistaken, some moly kits are sold with ceramic media. If there was any chance of abrasive damage, I would think the companies selling such kits would not do so.

When it is all said and done, the media's purpose is to impact plate the HBN to the surface of the bullet. So, what ever you may want to use, be it BB's, ceramic, stainless, or the bullets itself should be perfectly acceptable, granted you choose the correct media profile, for impact coating the bullets. ;D

I think the real question should be, which product is most efficient and gives the most consistent even coating? And, not damage the bullet tips, OP's question.

 

[kelbro]

A small carton of BBs runs about $3 and does very well.

 

[zfk55]

No, Joe. That's not what I meant at all. I meant one rifle barrel has been treated and fires only impact coated projectiles and the second one hasn't. It has nothing to do with impact media. I only use the .177 balls. The comparison for us was barrel condition and wear between the two k31 rifles. Nothing to do with impact coating media.

Latigo