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Those using HBN

WOW. Lots of questions. I use the same hBN to coat the bore that I use to coat bullets. As stated earlier, I keep the slurry solution in a prescription bottle that is slightly taller than a bore mop. The mop stays in the bottle.

Jaychris, it takes more than a couple patches. I use the type of jag that is similar to a sewing needle and which the patch is 'threaded' on the jag. The first patch comes out the muzzle filthy black, but I pull it back thru as the filthy side comes back thru inside out. That patch is tossed. A second patch is run back and forth twice. A third patch makes three round trips. I then switch to a tighter fitting patch and run it thru 4 or 5 times. Then back to the original size patch and if I can reverse it just before the patch clears the muzzle and pull it all the way back to the chamber, then I am done. Before the dry patches, I spin a bronze brush in the chamber neck and throat area to remove any carbon deposits in that area. I try to do the dry patching as soon after 20 shots as possible since it only takes 5 minutes or so. Last week at the Rayner's long range steel comp I dry patched at the lunch break. The format there is 18 shots at three stations, lunch, then 18 shots at three more stations.

Tumbling bullets. I have a vitamin bottle with BBs covering the bottom one fifth of the bottle. Since that bottle has probably coated 3000 or so bullets, the inside is pretty well coated. I use enough hBN that stays on the end of a popsicle stick for 100 105 grain bullets. I used to wash bullets first but got lazy and quit and I don't see a difference in the bullet appearance. I have the small Lyman tumbler bowl and the vitamin bottle wedges in the empty bowl. So the tumbler vibration goes directly to the vitamin bottle which runs for 2 hours. I pull the bullets out of the bottle with tweezers so any leftover hBN and BBs stay in the bottle. Wipe 20 off at a time and they go back in the original boxes. Yes, they have a frosty look to them at this point.

As far as I know, Tubb's kit is the same hBN.

As I stated earlier, the first barrel I did had 39 rounds down it before getting the hBN bore mop treatment. And as the article cautioned, I cleaned and scrubbed until I felt the bore was squeaky clean just before the ceramic coating process. When I got my second 6XC barrel, I decided to ceramic coat before the first bullet went down the bore skipping any break-in. That barrel has 665 rounds down it and I don't see any ill effects from what I did. My latest barrel, a Bartlein 5R chambered in 6SLR also got the same treatment before the first shot. 434 rounds later, also no ill effects. That barrel killed 4 groundhogs this morning with 4 shots - 267, 429, 366, and 271 yards.
 
As I ultrasonically clean now, I left the media out of my vibrator tumbler and put a round piece of 1/2" foam plastic that fits about half way down in the tub. I use in-expensive 8 oz plastic glasses with screw on tops set into holes cut in the plastic foam so they stay firmly in place. I have 3 holes. 1000 tin plated, solvent cleaned BB's in each container. I usually only do 2 containters with the third empty. 50 6mm or .308 bullets (cleaned in solvent)in each 1000 BB's with a medium slot screwdriver tip half heaping with hBN. Vibrate for 3 hours. Put on latex gloves and pick out the bullets and put bullets in a large knit sock and roll back and forth a while. Put the bullets back into their box with "hBN" written on the top.
Tablespoon of hBN into 8 oz denatured alcohol for slurry coated into barrel with a mop. Clean hBN out of the chamber area with a shotgun mop. Go shoot.
I don't know about never using chemicals to clean the bore. I still use Sweets to get out the copper and Wipe Out following. Also watch for carbon build up.
 
What is this doing for speed?
I've been sitting on some hbn for a couple years. I threw some bullets and steel BB's in a plastic peanut butter jar with the lid duct taped in the dryer with my work clothes. Never shot em.

This has me wanting to give it a go now.

Jim
 
i shoot short range benchrest and recent started playing with HBN.

i cant tell that it makes much difference with powder fouling, but does make a huge difference in copper fouling. the powder fouling comes out more easily, but it's still in there. even with barrels that are starting to firecrack, the copper fouling is very close to zero.

i've run the coated vs non-coated bullets over a chrony but cant recall right now what the difference was. it takes .2 to .3 grain increase in powder to get the gun back in tune for my 6ppc setup.

i was given Tubb's coating kit from a buddy that didn't like the results it gave him. i tried some with his 'proprietary' blend and didn't care for it at all. Tubb's stuff is not straight HBN.
 
jonbearman said:
This is getting interesting,finally someone asked how to do it.Is there a way to coat without a heat lamp? I have pill jars but I dont want to hack up my dillon tumbler like the swiss article showed.I was told washed bb's for the media with washed bullets in each jar with about the end of a screwdriver tip full of hbn and put the jars in my normal media and tumble for 2 to 3 hours roll on a towel to remove excess and if they look frosty then your done.How far off am I from doing it right???

Johbearman....this is what I have done. I use the smaller Dillon Vibrator/Tumbler and leave the top off. I put my SS ball bearings from McMaster-Carr in a 40oz Jif peanut butter jar (about 4lbs worth, or about 2.25" in the jar). I add 100 bullets (wiped down with cleaning fluid) and 3.5 grains of hBN and set the jar on it's side in the Dillon. As it vibrates the jar slowly rotates and I do this for several hours.

When you open the jar it will smell like vinegar, this is normal. If the bullets look a little blotchey you used to much hBN. You can take out the SS ball bearings and roll them in a towel to remove some of the hBN., then re-tumble the bullets and it will remove the excess hBN from the bullets. When the bullets are done I lightly roll them is a towel and your done. You will use less then 3.5 grains of hBN on future batches because the SS ball bearings will of already been coated.

I make up my slurry with 99% Isopropyl Alcohol, special order from local drug store. Took 2 days and cost was about $4.00
 
holstil said:
How about cold bore shots? Does it help?

I would say, Yes, it helps. Because the barrel is not restored to squeaky clean.

I don't own a bore scope and I'm sure my hBN ceramic coated barrels are far from being really clean. But isn't the name of the game ACCURACY? I have put 911 rounds down a bore since it last saw a brush or chemicals and accuracy & velocity are the same as 900 rounds ago. So I really don't care how clean the bore is as long as accuracy and velocity stay the same.
 

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