300 Gr TSX in the .458 Win Mag?

duckman90 · Jun 28, 2014

Hey Guys!

As some of you know I finally finished my .458 Win build. So far the gun is sweet, but I have only been shooting 500-510 grain bullets out of it. I am starting to have enough brass to think about reloading for it. Does anyone have any good 300 grain loads worked up? I'm think deer and Hogs are on the docket for this fall. NO Buffs Just yet.

PHOENIX PHIL · Jun 28, 2014

I don't, but you may also want to give a look at this bullet:

https://cuttingedgebullets.com/cgi-bin/commerce.cgi?preadd=action&key=FB_S258_RAPTOR

I've used this in my .458B&M and it is crazy accurate. I shot a 1.25" 4 shot group at 200 yards with these. They might be a bit tough on deer however.

If you do give it a go, contact the guys at CEB and they'll provide you some starting loads. Expect to use a very fast burning powder.

tarbe · Jun 28, 2014

55 grains of IMR 4198 with the 300 grain bullet. Should get you about 2,100 fps.

Use magnum primers to help ensure reliable ignition.

I have gone as low as 50 grains, but ignition can get spotty...don't go below 54 grains.

Tim

duckman90 · Dec 6, 2014

I am tried 80 Grains of H335 but it produced horrible accuracy 4 inch group at 100 yards... So right now I am going to try some 75 gr - 79 gr and see which is going to produce the best accuracy... MY goal is to get this load as close to 2600FPS as I can safely.... I might have to start trying new powders...

300 Gr TSX in the .458 Win Mag?

duckman90

PHOENIX PHIL

tarbe

duckman90

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