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Thread: 300wm good luck on first try

  1. #1
    Boolit Man
    Join Date
    Oct 2013
    Posts
    80

    300wm good luck on first try

    today I tried paper patching my Winchester 70 300 win mag as a possible hunting load. I was using lee 170 acww boolit, I patched about 2/3 the way up the bore riding portion to a bit behind the ogive with Alvin lightweight tracing paper from amazon. then I baked em at 200 to dry, smeared some LLA on and pushed through a .3095 sizer. for reloading I FL sized 1/4 turn off and used an M die. powder charge was 26.5 sr4759 and 1 gr of pulled apart polyfill on top. I seated to 3.295 which is about how far you can push in till bearing surface would be exposed in the case.


    on chambered ones the rifling makes marks on the paper about 3/16" or so down it, took 5 shots at 70yds over the chrony, shot 1.25", lowest velocity 1877, highest 1890. and these were castings set aside as minor defects, not weight sorted and some of the papers overlapped on the 2nd wrap. I thought this was great for a first try!

  2. #2
    Boolit Master
    Join Date
    Mar 2008
    Posts
    282
    It sounds pretty good to me too!

  3. #3
    Boolit Master
    Join Date
    May 2012
    Posts
    1,525
    Now that's a patching experiment worth pro-suing.
    "JUST A OLD DEPLORABLE THAT'S IRREDEEMABLE."

  4. #4
    Boolit Master
    Join Date
    Apr 2005
    Location
    sulphur springs, Tx
    Posts
    902
    Trying to make sure I understand. So you didn’t size the bullet down to bore diameter before wrapping it with the patch?
    There are only two kinds of men:

    1. Those who know Jesus Christ is both Creator and Sovereign Lord.

    2. Those about to learn that Jesus Christ is both Creator and Sovereign Lord.

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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