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Thread: simple Hi-Tek coating

  1. #14601
    Boolit Buddy
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    While coating this last batch of bullets, I noticed my baking trays are getting pretty beat up. I made them out of galvanized 1/4” hardware mesh, folding up and interlocking the corners. The trays worked well for a while but I don’t think they are really up to the task of the heavy loads of bullets long term. I know a lot of folks here are using perforated trays and I was wondering where those folks source them from. Everywhere I am looking, the trays are quite expensive. Does anyone have a source for a good economic tray?

  2. #14602
    Boolit Master
    Ausglock's Avatar
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    buy once, cry once.
    Stainless Perf plate 13" square with a 1/2" lip bent up on all 4 sides.
    Hole size is 4mm.
    I have 36 of them
    Local Sheet metal business bent them up for me.
    Not cheap, but will last forever.
    Hooroo.
    Regards, Trevor.
    Australia

  3. #14603
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    Question, How fast can you send Hi-Tek coated plain base lead bullets? How hard an alloy and how many coats? Eg 2000 fps? And Carbide Lee APP sizing dies i need to drop off to someone.Still have 5 more dies to finish . Click image for larger version. 

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  4. #14604
    Boolit Master
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    Have sent 155gn Lee mold 309"dia out of Parker Hale 308 with no gas check at 2300fps.
    Accuracy was Ok... Not brilliant, but OK.
    2 coats of Kryptonite green on 2,6,92 hardball alloy

    Can you make those dies in .3565" and .3575"?

    I use Lee APP sizer dies that are turned down on the outer dia to fit inside the 7/8x14 die hole on a Lee press. They slide in and are kept in place with a hollow 7/8x14 bolt body... Note. My Lee press is up side down.
    Hooroo.
    Regards, Trevor.
    Australia

  5. #14605
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    That is way faster than i thought they could go without leading. What sort of twist rate was that?

    I have altered my sizer to handle APP dies, you drop them in the hole and gravity holds them in place, that and surface rust in the holder.... The only disadvantage for my setup is that i can't wind it out so it will sit lower for longer projectiles to not stick out and catch the slider, but i have an idea of how to get around that issue that will hopefully work.

    Awesome work on the dies, they look great and will last even a commercial caster a life time

  6. #14606
    Boolit Master

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    Finally got to try some new to me Hi-Tek powder.
    Click image for larger version. 

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  7. #14607
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    Quote Originally Posted by DDriller View Post
    Finally got to try some new to me Hi-Tek powder.
    Click image for larger version. 

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    very nice, good work....

  8. #14608
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    Thanks, only did 5# of each. Need to do some bullets in the bronze.

  9. #14609
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    All look over baked.
    Hooroo.
    Regards, Trevor.
    Australia

  10. #14610
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    Quote Originally Posted by DDriller View Post
    Thanks, only did 5# of each. Need to do some bullets in the bronze.
    looking forward to what you make...

  11. #14611
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    Quote Originally Posted by Ausglock View Post
    All look over baked.
    may be over baked a little, but quite acceptable finish

  12. #14612
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    Quote Originally Posted by Ausglock View Post
    All look over baked.
    Probably a little. Waited 2 minutes after infared thermometer reached 180 C. Temp jumped 10 degrees in that 2 minutes. Coating looked good so I did all of them that way.

  13. #14613
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    Quote Originally Posted by DDriller View Post
    Probably a little. Waited 2 minutes after infared thermometer reached 180 C. Temp jumped 10 degrees in that 2 minutes. Coating looked good so I did all of them that way.
    You may have your set temperature a little higher than needed, or, may be, your thermostat has large swings with temperature control, so final temperatures can over shoot.
    If you are happy with results, it is OK.

  14. #14614
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    I was searching for perforated steel to make some trays and came across these baguette pans that have a bunch of little holes in them. The only problem is they are shaped like a log holder with three droops. They are light sheet metal but with some bends in them are quite stiff. I flattened out the pans with the 20 ton press and folded the sides up to get the right size for the oven. I welded the corners although it wasn’t required. They turned out nice for 7.00 each plus about an hour labor Click image for larger version. 

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  15. #14615
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    Quote Originally Posted by flybyjohn View Post
    I was searching for perforated steel to make some trays and came across these baguette pans that have a bunch of little holes in them. The only problem is they are shaped like a log holder with three droops. They are light sheet metal but with some bends in them are quite stiff. I flattened out the pans with the 20 ton press and folded the sides up to get the right size for the oven. I welded the corners although it wasn’t required. They turned out nice for 7.00 each plus about an hour labor Click image for larger version. 

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    Great job... well done, very innovative design...

  16. #14616
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    Only problem is that they are so slick that when you do a pan shake part way through the cook cycle, the bullets don’t really move much because there is nothing to grab onto them like the 1/4” hardware cloth did.

    Haven’t cooked in them yet but I suppose I will have to recalibrate my cook time since the tray has so much more mass then the hardware cloth did.

  17. #14617
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    Quote Originally Posted by flybyjohn View Post
    Only problem is that they are so slick that when you do a pan shake part way through the cook cycle, the bullets don’t really move much because there is nothing to grab onto them like the 1/4” hardware cloth did.

    Haven’t cooked in them yet but I suppose I will have to recalibrate my cook time since the tray has so much more mass then the hardware cloth did.
    The extra mass of metal will help in evening out temperature distribution.
    I suspect, that they have a non stick surface with fused PTFE, so coatings should not leave any residue, and what does stick, may be easily wiped off as the coatings should not stick to PTFE.
    Your idea is a great one. may be you can start a new product for hobbyists and larger casters.

  18. #14618
    Boolit Mold
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    Since lead oxidize so quickly, Is there anything I should do before coating projectiles that were cast a few weeks ago?

  19. #14619
    Boolit Master
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    G'day Dave.
    Mate... Just coat them as normal.
    I have cast uncoated sitting here for months before they get coated and Baked.
    No ill effects at all.
    Hooroo.
    Regards, Trevor.
    Australia

  20. #14620
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    Quote Originally Posted by Dave001 View Post
    Since lead oxidize so quickly, Is there anything I should do before coating projectiles that were cast a few weeks ago?
    How are you doing Dave, great question.
    Do you know composition of your Lead alloy?
    Just a quick heads up, if you are casting using "unknown" mixtures that may contain Zinc, Magnesium, Cadmium, or similar contaminants, these will form heavier oxidation film on surfaces, that may interfere with coating adhesion. If you are using 92-6-2 alloy stored casts will be OK to coat. If you suspect contamination of alloy, you may need to acid treat wash and dry before coating is done.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check