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Thread: Jacketed 300-350 gr bullets for 458 Lott

  1. #1

    Default Jacketed 300-350 gr bullets for 458 Lott

    I would like to have some load data for jacketed 300-350 gr bullets for my 458 Lott. Can I use existing/published 458 Win Mag data?

  2. #2

    Default yey and nay

    The only published data source I have for the Lott is the Hornady 7th edition. It lists a 350 gr bullet load for both. While the data overlaps some between the Win Mag and the Lott the different case capacities call for different start and max loads for each type of powder. That means a minimum or starting load for a powder/bullet combo for the Win Mag is too low for the Lott. Of course the max load in the Win Mag is well below the max load in the Lott with any given powder/bullet. The theory is that a charge too low (too low a load density) for a particular powder/bullet/cartridge combo can cause upredictable pressures. This seems especially true with the very slow ball powders.... the good news is that neither cartridge calls for the very slow ball powders.
    Last edited by 405; 08-14-2008 at 09:28 PM.
    "You can't have no idea how little I care"- Montelius Walsh

  3. #3

    Default Much appreciated

    As I don't own a Hornacy 7th edition, would you please give me some examples of the loads you mentioned for the 350 gr jacketed bullet (without getting into copyright problems of course).

  4. #4
    Gunload Grunt kg42's Avatar
    Join Date
    Nov 2005

    Default has two loads in their pdf file; it might pay to check hodgdon, accuratepowder and ramshot.


  5. #5

    Default data

    I'm not worried about copyright.... more like liability of second hand data!
    I checked Hodgdon online and they don't list data for the Lott.

    Here's a pic of the Lott 350 gr. data from Hornady
    Next post will be same for the 458 Win Mag.
    "You can't have no idea how little I care"- Montelius Walsh

  6. #6

    Default more data

    Here's the 458 Win Mag 350 gr data pic
    "You can't have no idea how little I care"- Montelius Walsh

  7. #7

    Smile Many, Many Thanks

    This is really a BIG help. By the way, I just ordered the 7th edition Hornady reloading book from I am also trying to find some loads for the 375 H&H with the Hornady 200-220 gr jacketed bullets.

  8. #8

    Default 375HH data

    Good deal!
    You'll be happy to know that the Hornady manual also has data for the 375 HH 220-225 gr. bullets!.... as do the current Lee manual and for the 235 gr in the older Lyman manuals.
    "You can't have no idea how little I care"- Montelius Walsh

  9. #9


    Thank You So Ver Much As This Really Helps !!!

  10. #10
    Great Master
    Join Date
    May 2021


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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
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