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Thread: Rebuilding a Lyman 450

  1. #1
    Boolit Master

    Join Date
    Oct 2009
    Location
    England,Ar
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    2,249

    Rebuilding a Lyman 450

    My 40 year old Lyman 450 has been leaking lube from the bottom area and I got it empty yesterday and have it taken apart. I googled for info and there were lots of references back to our forum here. A few guys talked about using set screws to stake the plug back into the bottom of the sizer. Does anyone have one done this way that they have pictures of? I have a drill press, cross vice, drills and taps and lots of set screws and short machine screws. I'll be going into town tomorrow hunting "O" rings. Thanks!
    Last edited by lightman; 07-16-2017 at 06:45 AM.

  2. #2
    Boolit Master marlin39a's Avatar
    Join Date
    Apr 2010
    Location
    Paulden, Arizona
    Posts
    656
    I've rebuilt 3 over the years. The 450 is known to leak out the bottom. I've used cut cereal box scraps to put on the bottom, and bolt it down. That will stop it. If you need the 2 "O" rings that go on the pressure ring, PM me with an address and I'll mail them out to you free.

  3. #3
    Boolit Master

    Join Date
    Oct 2009
    Location
    England,Ar
    Posts
    2,249
    That would be great, Thanks a lot. PM on the way.

  4. #4
    Boolit Master

    Join Date
    Oct 2009
    Location
    England,Ar
    Posts
    2,249
    Well, I got it back together yesterday afternoon! Marlin39A sent me the correct size rings (Thanks Brother) for the pressure nut and I found the correct size "O" ring for the bottom seal at the Case/International dealer, after trying 2 different parts stores. I only looked through 5 drawers and maybe a million "O" rings! A friendly equipment dealer or an industrial rubber shop is the place to go for stuff like this! Now, back to sizing boolits!

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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