Re: Powder Coating Boolits
Others have used hex nuts to good effect. Slightly smaller than the boolit.
Re: Powder Coating Boolits
Jacketed velocities are easily achieved, but due to lower friction a slightly faster powder needs used. The only downside I have found with PC boolits in my AR has been getting groups smaller than 3moa... I'll be trying harder alloy next time. The possibility exists that powder coat is just too slick...
Re: Powder Coating Boolits
I have a DPMS LR 308, I use the lee 309 170 grain round flat boolit. I sized to .308, coated, then sized .309.
The bore condition prior to firing, was cleaned and all copper removed. The bore condition after firing was cleaner yet... Smooooth, very shiny. Alloy was wheel weights plus about 1 percent tin, air cooled.
I used Powder by the Pound's liquid to powder product as well as their deep burgundy metallic polyester TGIC powder.
I tried coating them by tumbling them in the mixture, which is 50 percent powder and 50 percent liquid by weight. It did not work as the liquid product seems to be nothing more than distilled water with an additive to reduce surface tension. Possibly soap. however when it dries, it is no different than if you had magnetically applied the powder. Any touch wipes it off... Then I tried an airbrush and it worked well, however it is difficult to coat evenly.
I have tried a verity of loads from 2000 to 2400 fps, and all have given 3 to 4 inch groups at 100 yards.
Coming up, I'll try harder alloy, sizing larger and static coating. Possibly find something else to mix the powder coat with that will dry hard allowing boolits to be handled prior to baking. Any ideas?
Re: Powder Coating Boolits
Quote:
Originally Posted by
xyankeeworkshop
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Olaf, did you get a chance to get a good look at the before and after condition of your barrel? I know PC is tough and slick stuff, but j-word velocity in a 1:7,8, or 9 twist...yeeesh.
I have not had the chance to inspect any recovered boolits yet, however I have several gallon milk jugs full of water waiting and ready to go... Bore indicates no problems whatsoever.
Quote:
Originally Posted by
Catsmith
thinking about a way to leave the front end exposed, making like a soft point for hunting. thinking of aluminumwith holes to place tip in. for instance swc with hole for rim to rest on. could you soften alloy a little for better expansion while the pc acts like jacket for the trip down the tube. am i off base with this?
I was thinking of building a jig by taking a board just smaller than my baking tray, drilling holes for the noses to fit snugly into and yet be loose enough to fall out when inverted. Insert boolits nose first, spray powder, cover with parchment paper and then baking tray. Invert, remove jig, bake... Sounds good in theory right?... Course that's for liquid2powder... Possibly alum plate for static application?