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Thread: .480 Ruger load data

  1. #1
    Boolit Mold
    Join Date
    Feb 2020

    .480 Ruger load data

    I bought some 340 grain SWC-Keith style bullets for my .480 Ruger and I'm looking for some help with load data. I'd like to run them around 950 fps. Preferably with Unique or 2400 powder.

    Most of the load data, in my manuals, is for cup and core bullets at full power. The closest cast bullet data I have, is for a 325 grain bullet and starts at over 1100 fps. Searching the internet doesn't seem to come up with any data for this weight.

    The bullet is from Montana Bullet Works and from the description, I assume it is a LBT produced mold.

    Any help would be appreciated.

  2. #2
    Boolit Master Wheelguns 1961's Avatar
    Join Date
    Jun 2018
    Mid atlantic area
    You can use data for a heavier bullet, but not for a lighter bullet. I shoot a 386gn cast hp in my 480’s, with 18.0gns of 2400. This is max load data for a 400gn bullet according to my lyman cast bullet handbook #4. 17.5gns is the starting load for a 325gn bullet with 2400. The velocity is 1110fps for the 325gn bullet. My suggestion would be to start around there and work your way up, checking for pressure signs, and for your preferred velocity. Hs-6 also works very well in the 480. I would suggest to start at 13.0-13.5 with hs-6. Welcome to the forum.
    Due to the price of primers, warning shots will no longer be given!

  3. #3
    Boolit Mold
    Join Date
    Aug 2018
    10 grains of unique should be close, i shoot that bullet as well. HS-6 is another powder that’s pretty good and 12-14 grains should get you in the same territory.

  4. #4
    Boolit Mold
    Join Date
    Aug 2018
    Click image for larger version. 

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    I can’t take credit for this data, it was worked up by someone here. I can’t find the original thread it was posted in.
    Last edited by R-71; 02-01-2020 at 11:26 PM.

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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