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Posted: 6/20/2011 12:00:49 PM EDT
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I just saw this stuff the other day and with some googling I found people claiming to be able to reach higher velocities when coating projectiles with this powder. Also your barrel is supposed to clean up very easily, and also lower pressures at the same powder charges.
You can get it for $50 for 1lb from Canada so shipping is another $20 to me, so I found a guy selling small tubes on eBay. I purchased three of these tubes. They are .4 ounces, but by my calculations using 3.5grains per 100 projectiles, that's 5000 projectiles per .4 ounce tube. Thats 1 cent worth of powder for ever 6 projectiles. I used Daisy Zinc Plated .177 bb's I found that the dipper in my Lee 9mm kit holds 1.8 grains of powder. Here is everything I am using. The bottle is a cleaned out Snapple bottle 
I tumbled the bb's for 45 minutes to coat them, I put duct tape on the bottle to reduce some noise so the glass isn't hitting the metal in the middle.... 
I put in about 110 projectiles and gave them a few shakes so they mixed in for the picture. The projectiles were tumbled in walnut overnight and are super shiny. 
The projectiles are tumbling now so I will update later. |
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Saved for Range report
I just loaded these, and hopefully tomorrow I will get to chrono them. My Scope is going in for repair so I'm only looking for velocity now, I will see what the effects on accuracy is next week. To test in my 16" Carbine: SS109 25.0gr AA2230 LC08 CCI41 75gr BTHP T1C 24.5gr Varget LC08 CCI41 To test in my 18" SPR: 75gr BTHP 23.5gr Varget LC08 CCI41 |
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Quoted:
so how does adding a powder make you achieve greater velocites? It is supposed to reduce the friction between the projectile and barrel. The effects I have read about: -Increase Velocity -Decrease Pressure -Make barrel easier to clean -Make barrel cooler compared to without hBN -Increase Barrel Life, I'm guessing this is part of the lower temperatures. |
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so how does adding a powder make you achieve greater velocites? It's similar to moly coating, but with fewer drawbacks. Moly is a high pressure lubricant (400k psi) IIRC and while you do reduce friction, people generally have to up the charge weight...say by a grain, to achieve the same velocities as they get shooting naked bullets with the same X, Y or Z charge. Chris |
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What is the method of appling the powder? Vibrating tumbler? The pic in your post would suggest shaking on top of a dryer?? This is new to me, please explain. Sorry I forgot a picture. I threw the snapple bottle in my vibratory tumbler, it made a hell of a racket! I have read about people doing it both of thumbler's tumbler and a vibratory tumbler. |
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Quoted:
Quoted:
What is the method of appling the powder? Vibrating tumbler? The pic in your post would suggest shaking on top of a dryer?? This is new to me, please explain. Sorry I forgot a picture. I through the snapple bottle in my vibratory tumbler, it made a hell of a racket! I have read about people doing it both of thumbler's tumbler and a vibratory tumbler. That makes sense, thanks for the quick answer. |
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Quoted:
Quoted:
so how does adding a powder make you achieve greater velocites? It is supposed to reduce the friction between the projectile and barrel. The effects I have read about: -Increase Velocity -Decrease Pressure -Make barrel easier to clean -Make barrel cooler compared to without hBN -Increase Barrel Length, I'm guessing this is part of the lower temperatures. Did you mean increase barrel life? |
| I have an old bowl from a Lyman 600 that I just dumped 6000 Copperhead BB's in & a teaspoon of powder. Throw in as many bullets as needed & let her rip. Leave the room for an hour or so, return & separate the bullets from the BB's. Then I vibrate in my Lyman 1200 with plain corn cob media for 20 or 30 minutes, separate & put the bullets back into their boxes. That same teaspoon will coat a lot of bullets. |
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Quoted:
I have an old bowl from a Lyman 600 that I just dumped 6000 Copperhead BB's in & a teaspoon of powder. Throw in as many bullets as needed & let her rip. Leave the room for an hour or so, return & separate the bullets from the BB's. Then I vibrate in my Lyman 1200 with plain corn cob media for 20 or 30 minutes, separate & put the bullets back into their boxes. That same teaspoon will coat a lot of bullets. Whats the point of coating them and then tumbling them? Sounds like you would be removing the hBN Quoted:
Did you mean increase barrel life? Yes 
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OK I shot the projectiles on Friday and I think I messed up a step. There was a 30-60fps drop in velocities across the board, except with the one load.
The copper coated bb's left a gray coat on the bottle and projectiles and looking at other guides, this didn't happen to them. I picked up some Daisy zinc plated ones today and I'm redoing everything. |
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Quoted:
Quoted:
I have an old bowl from a Lyman 600 that I just dumped 6000 Copperhead BB's in & a teaspoon of powder. Throw in as many bullets as needed & let her rip. Leave the room for an hour or so, return & separate the bullets from the BB's. Then I vibrate in my Lyman 1200 with plain corn cob media for 20 or 30 minutes, separate & put the bullets back into their boxes. That same teaspoon will coat a lot of bullets. Whats the point of coating them and then tumbling them? Sounds like you would be removing the hBN Quoted:
Did you mean increase barrel life? Yes The hBN is impacted into the copper jacket. All the corn cob does it get off any excess. You could do the same using a towel I suppose. |
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