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Thread: Lee Collet Die for 7.7X58 Arisaka

  1. #1
    Boolit Master

    TCLouis's Avatar
    Join Date
    Mar 2005
    Middle TN

    Lee Collet Die for 7.7X58 Arisaka

    My Lee and RCBS dies both work the base of my 7.7X58 brass far too much every reloading so I want to neck size til they must be full length resized.
    Someone posted here that they are using 303 Brit Collet dies, but I only fined a full set of dies for that.
    Looking at Mid South's catalog they list 30-06 Collet Die only and I'ma thinkin all I would have to do is make a ring to drop over 7.7 brass that would activate the collet mechanism and make up for the difference in length to the neck between 06 at 63 mm and 7.7 at 58.
    The reason the using the 30-06 collet die is so tempting is that I shoot the same boolits out of the 7.7 as I do my 30cals.
    OR if someone has the 303 they don't use I could solicit for it in classifieds.
    Last edited by TCLouis; 11-01-2018 at 09:48 PM. Reason: Added info
    Nothing is impossible for the person that does not have to do it.

  2. #2
    Boolit Master

    curator's Avatar
    Join Date
    Mar 2006
    Fort Myers, Florida
    Why not contact Lee Precision directly? I have bought single dies from them in the past. The advantage of using the .303 British collet die over the one for .30-06 is that both .303 & 7.7 cartridges are the same length (58 mm) and shoot the same bullet diameter (.311-.312)

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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