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Thread: PC bore lapping boolits

  1. #1
    Frosted Boolits


    IllinoisCoyoteHunter's Avatar
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    PC bore lapping boolits

    Had anyone tried adding a light abrasize (like Comet or Ajax) to powdercoat to make firelapping boolits for rough barrels? My M&P 9mm could use such a treatment if it works. Anyone try this?
    Looking for an RCBS A2 with the removable bushing. I need it to complete my A series collection. Please let me know if you have one you want to get rid of. Thanks!

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  2. #2
    Boolit Bub
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    I've used the valve grinding compound from automotive stores in my big bore air rifles with great success, Mr Tate who builds the PBBA air rifles told me this works great, you can also use the JB paste from Brownells it just costs more.

  3. #3
    Boolit Master NoAngel's Avatar
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    You'd have to mix the Comet with PC and bake it on. I can't see you getting much of an even coat with it, but it'd be worth a try if you have a really rough barrel. Not much to lose by trying. I think you'd be better off filling the lube grooves with a lapping compound.
    When dealing with islam one should always ask themselves: "What would Leonidas do?"

  4. #4
    Boolit Master

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    Simply use the desired powder and roll the bullet on glass or steel plates to impregnate them with the compound. PC'd bullets should pick it up fine in this manner. If spraying on I would be concerned with the nozzle on the spary gun and needle valve being "lapped" from this being pushed thru them under pressure.

  5. #5
    Frosted Boolits


    IllinoisCoyoteHunter's Avatar
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    I shake and bake. But i do like the idea of rolling the abrasive into the PC.
    Looking for an RCBS A2 with the removable bushing. I need it to complete my A series collection. Please let me know if you have one you want to get rid of. Thanks!

    My Feedback : http://castboolits.gunloads.com/show...iscoyotehunter

    An armed society is a polite society.

    the BB knows

  6. #6
    Super Moderator & Official Cast Boolits Sketch Artist


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    You may be able to coat and start baking when the PC starts to melt take them out of the oven and dust with your compound if its the dry type then finish baking not sure what will happen but may work.
    Reloading to save money I am sure the saving is going to start soon

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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