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458 Magnum reloads #14416843 12/30/19
Joined: Dec 2003
Posts: 1,537
hunter01 Offline OP
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After trying unsuccessfully to find reloading data for 325 gr. bullets with Reloader 7 and H4198 for use in the 458 Magnum, I'm coming to the Campfire in hopes of getting the information I'm looking for. Any help with load data for the 325 gr. 458 bullets and powder would be most earnestly appreciated. Thank you.

Hunter01

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Re: 458 Magnum reloads [Re: hunter01] #14427645 01/02/20
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FatAlbert Offline
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Wrong Forum!!!! Should put this on Express Forum


Jim Gibson
Re: 458 Magnum reloads [Re: hunter01] #14653281 03/11/20
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AussieGunWriter Offline
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325 grain bullets in .458 are an oddball size so I have never seen them even though I have used .458's for decades.

You should be able to use 350gn charges as starting loads and maybe get another 2 or 3 grains to suit that weight is you are stuck on it.
Rel 7 should used around 69gn and possibly a couple more grains
H4198 is a good choice but I'd start with 75grains. There is huge variation with the recommended powder charges for this powder and I have see 10 grain variations but because I have loaded a damn lot more than most with this case, I know the charges will permit easy extraction and no signs of excess pressure in this case.

John


The Barnes X 400grainer was the very best of the best in .458 caliber but obviously more people made decisions from 2nd hand information otherwise the 400 grainer would still be on the shelves.

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