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Thread: Heat treating

  1. #1
    Boolit Master The Real Doc Holliday's Avatar
    Join Date
    Apr 2012
    Location
    Salem Oregon
    Posts
    756

    Heat treating

    Hey guys, I have been heat treating for years when needed and have always kept bullets from touching.... I now have 30 cal bullet mold and want to heat treat but they are so thin that they fall over when I try to pick up the tray. Can cast bullets touch when heat treating?

    Thanks
    Tim

  2. #2
    Boolit Master
    Join Date
    Jul 2014
    Location
    Arizona
    Posts
    2,483
    I made a sheet metal tray with holes drilled in it to stand the Boolits in when heat treating and Powder Coat baking.
    The boolits I cast are GC style.
    So the hole on the sheet metal matches the size of the GC base of the Boolits.
    The sheet metal is 1/16" thick.
    To get a precise fit , I drill the holes smaller , then team them out to size with a Tapered Hand Reamer.
    I use one for spraying my PC Boolits so the GCarea on the slug does not get PC'ed and the GC's fit excellent after PC is baked.

  3. #3
    Boolit Master
    Join Date
    Jan 2011
    Location
    NE Kansas
    Posts
    1,322
    A single layer in a wire basket should not be a problem. Just do not get rough handling the basket while moving from the oven to the water.

  4. #4
    Boolit Grand Master

    swheeler's Avatar
    Join Date
    Mar 2005
    Location
    Montana
    Posts
    5,189
    I started oven heat treating after reading Dennis Marshalls description and it worked perfectly. " Bullets should be well supported during heat treatment, lying on their sides and no more than two layers deep." quote by Dennis Marshall

    although he does find the slump temperature of the alloy used by standing bullets on their base
    Last edited by swheeler; 07-05-2020 at 06:09 PM.
    Hell, I was there!

  5. #5
    Boolit Master Dapaki's Avatar
    Join Date
    Jan 2020
    Location
    Minne-Snow-Ta!
    Posts
    507
    Have you considered using a silicone ice cube tray? Here is a 1670 cube tray, they are small enough to get three of them in a normal oven. I have .30 cal 200gr boolits in this one, they will NOT stand up on any sheet, no matter how flat.

    I loaded 100 .223 bullets in that tray right after and they also all stood up, much to my surprise!

    Click image for larger version. 

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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