A partnership for powdercoating.

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blarby said:
The .358's turned out real good, coat wise.

One coat, rolling the bearing surfaces.
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Good job! Nicer looking coating, even in higher humidity environment (showing 64% today for your location?!). This is turning out to be a good test of humidity vs powder coating method that many reported challenges with. Looks like you are getting the hang of powder coating in just two days!
 
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blarby said:
Wow, ok, just found out something very interesting. Apparently, humidity REALLY matters in adhesion. Yesterday, we were at 50%. Everything looked good, minor rolling about to redistribute lube.

Today we are at 70%, and I get this :

< poorly coated bullets with bare lead spots >
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However, a few rolls around on the carpet to pick up extra static and we get this :

< nicely coated bullets with no bare lead spots >
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I need to keep this in mind as by the time I end up casting and powder coating bullets, I will be in high humidity environment.

So if you are getting poor powder adhesion, increase static electricity by rubbing container on carpet. Check. :D
 
blarby said:
bds said:
Pelo801 said:
I'm curious how much diameter the PC adds to the bullet.
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Some have posted PC thickness at .001" - .0015" so I am curious too.
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That seems to hold, even with multiple (2) coats.
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For those wondering if they can powder coat bullets and use without having to size, it will add .002"+ to the diameter of the bullets as cast.

I am thinking this would create a challenge of .356"-.358" as casted bullets going to .358"-.360" being able to fully chamber in factory barrels. In our case, we are worrying about .4015" sized bullets when .002"+ added to .401" will result in .403"+ sized bullets that may not even work in Glock barrels.
 
452, 230 "LRN"

These are once coated, and unsized.

This is my favorite bullet in 45 ACP.

I've included some of the rejects at the front there in a line, to illustrate the difficulties of PC'ing in higher humidity. I had no rejects like this yesterday.
 

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309 110 grain spitzer.

Further illustrates the difficulties of high humidity.

I'm going to be giving these a second coat.



Given the difficulties and variations in coat density, I'm beginning to believe a second coat- although cosmetically lesser to a single coat, may be beneficial in all instances for the purposes of consistency.
 

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Ok, now the last load- which was all just rebakes anyway, is out of the oven.

On to some much needed cleanup, and then on to sizing.
 
Anyone have an idea on how powder coating holds up on 357 mag loads using h110 and 158gr slugs? I was thinking water dropping 100% WW bullets(I usually just use air cooled range scrap) and coating them 2-3 times sizing between coats. It'd be nice to not have to use xtp's for my full horse magnum loads. This new method for powder coating has opened so many windows for me. No need for tho occasional plated bullet anymore and if I can get away from having to buy jacketed, I'll never have to buy bullets again. Also this powder really goes a long way. I've used maybe 20% of a jar and I've coated over 2500 bullets so far.
 
Mike,

158 grain slugs for .357 mag are on the menu.

I dont have any h110 , sadly. I can get fairly close with 4227. I will provide what data I can.
 
Can you barrel drop test some .4015" bullet dummies in your Glock?

For the powder coating test, I had planned to only use factory barrels to check the PC compatibility with Glock rifling. If the .4015" loads drop in your Glock chamber freely with a "plonk" then they should work in my Gen3 Glock barrels.
 
Ok, BDS- they do pass the plunk test, trying to upload a hilarious video of me trying to do it one handed....

http://s100.photobucket.com/user/blarby308/media/0608141537_zpsf11c1b0f.mp4.html

Sorry the video is sideways.... If the link does not work for you, please let me know.

And they are "level" as autoloading cartridges should, as in level with the end of the barrel as Walkalong describes in his plunk test.


OH, and in other news....something absolutely horrifying just happened:

http://www.forbes.com/sites/jamesly...essfully-pretends-to-be-human-www-apocalypse/
 
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OH, and in other news....something absolutely horrifying just happened:
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http://www.forbes.com/sites/jamesly...essfully-pretends-to-be-human-www-apocalypse/

I don't want to hijack the thread but before we panic, let's think about this for a minute. What if the computer that passed the "Turing test" was incorporated with all available reloading database and knowledge base ... Wait, this may have already been done. For many years, we have been suspicious of rcmodel being a secret government experiment for responding so quickly with a sense of humor to various reloading questions. Perhaps rcmodel is this computer with a "humor" module ... :scrutiny: :D

OK, back to OP.

And thats enough bulletwork for this weekend folks.

Time to enjoy some of this awesome weather.
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Dang and we are baking here with 105F+ heat wave! :fire:

Thanks again for all the hard work. Will look forward to the bullets for the range test next!
 
blarby said:
Mike,

158 grain slugs for .357 mag are on the menu.

I dont have any h110 , sadly. I can get fairly close with 4227. I will provide what data I can.
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Not really looking for data for the 158gr slug in a 357 case, as you stated its everywhere- in my manuals and everywhere online. more interested in peoples experience in pushing powder coated bullets to full bore magnum speeds and how the coating holds up. Ive pushed xtreme plateds with h110 with no real issue.

On a side note, I wonder how this is affecting places like xtreme and berrys? This powder coating now completely eliminates any need I'd have for plated bullets.
 
blarby said:
?



? Confused.

Anywho.
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let me attempt to further clarify. not looking for load data, I know its 13-16ish gr and h110 isnt a powder you can underload.

Im asking if anyone has experience with pushing powder coated slugs to 1200-1300fps and how they hold up. are a couple coats necessary and are hard bullets/water quenching necessary. looking for how the powder coating holds up. Not how much powder to put behind the bullet. I need to find that out myself.
 
In my experience, I have run DTPC 158s with 16.7 gn of H110 without leading or PC residue with a single coat of dry tumbled HF red. Published speed for this load is 1591 fps. Starting charge is 15.0 gn.

NOTE: This is data for a JACKETED bullet

Though I have found most pc bullets to run fine at jacketed speeds, I tend to get better accuracy a little slower than max (+/- 2% )

I have run these loads with both Clip on WW boolits, and reclaimed range lead boolits. I always water quench, because for some reason, I keep denting bullets if I just drop onto a towel
 
Powder coated bullets - the new "Glock friendly" bullet option.
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Of that, I stand convinced.

I see no further need for plated bullets.

I strongly encourage factory glock barrel users to consider powdercoating. Call me converted on this one.

Tests to continue in other areas.

That however will have to wait for next weekend- and at that, only one partial day.

Full speed ahead. Eyes open.
 
Steve2md said:
In my experience, I have run DTPC 158s with 16.7 gn of H110 without leading or PC residue with a single coat of dry tumbled HF red. Published speed for this load is 1591 fps. Starting charge is 15.0 gn.

NOTE: This is data for a JACKETED bullet

Though I have found most pc bullets to run fine at jacketed speeds, I tend to get better accuracy a little slower than max (+/- 2% )

I have run these loads with both Clip on WW boolits, and reclaimed range lead boolits. I always water quench, because for some reason, I keep denting bullets if I just drop onto a towel
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thanks for the insight steve, Ill water drop some clip on WW's and bring both one and two coaters to the range. I was leaning towards loading to the top end(15.5-16.5gr) as I had a whole bunch of unburnt powder when loading starting loads with xtp's a year back.

Blarby- Ive had my g41 for a couple months now, a couple thousand rounds of 230gr alox tumble lubed down the bore and I gotta say, Im having a hard time getting the thing to lead up. Some old loads I had set aside that leaded up my tisas 1911 wouldnt leave a spec of lead in the block barrel... even after 300rds. IME, the larger the bullet, the harder it is to get a good tumble powder coat on them. For good results, I can tumble up to 60 105gr 38/380 bullets, 15 158gr 38 bullets or just 10 230gr 45's at a time. Ill keep with the icky sticky alox for my 45's, but im really liking the efficiency/accuracy using the 105gr PCLRN boolits. Sure they shoot about 6" lower than a 158gr at 15yd, but I can stretch my lead a good bit further, the recoil is equal to a 158gr, and they group very very well. That being said, this whole new powder coating thing has opened up the window of 9mm and 40 for me. Ive never considered buying one of either because Id shoot myself broke using plated bullets to avoid the leading. I still collect the brass regardless :D
 
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