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Thread: Frustrating day casting

  1. #1
    Boolit Buddy metricmonkeywrench's Avatar
    Join Date
    Apr 2016
    Location
    Virginia
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    455

    Frustrating day casting

    I have a Lyman 358429 HP .38 mould, first casting session with the mould I was using some 14 BHN lead that I have been using for most of my pistol bullets. I ran hot In my little 3lb Potter and had a real good run of bullets with few rejects. The 38 Pistols loved them, they hit where I aimed them and I got some great chrono results (SD of 10!!) and no leading. The little Potter is an odd duck, itís either on or off so I dont generally stick my thermometer in it and never let it get below half full, but it does pour some nice bullets.

    Being that I canít leave well enough alone I decided to try to cast some out of my range scrap 10 BHN Heinz 57 mix out of my 20lb Lee pot to get a softer bullet. It is my standard go to for my Lee soup can 148g and HG #50 wadcutter moulds and the bullets drop good and fast.

    Now for the frustration... well over a 50% reject rate, the noses filled out well but drips and blobs in the bands, bad fill out and rounded lube groove edges. Oddly enough the majority of the bases filled out well.

    I suppose I need to sweeten the mix with a bit of tin (pewter) to help with the fill out but itís still a bit of a bummer to dump half your work back into the pot....

  2. #2
    Boolit Master

    Join Date
    May 2015
    Location
    Anchorage, AK
    Posts
    939
    If your mold was up to temp, I'd try alittle more heat on your melt before sweating it. I used to get big swings with my Lee 20 pounder before I built a couple of PIDs. Now, my melt stays +/- 5į of my target temp. Also try bumping up your pre-heat temp on your mold.

    Remember, that Lyman mold is gonna need more heat than those aluminum molds until it gets heat soaked.

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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