458 win mag and 300gr barnes X data

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20 February 2002, 09:54

<Dr. John>

458 win mag and 300gr barnes X data

I am looking for data using the 300gr barnes x in the 458 win mag. I just loaded some using 82 grains of h322 and accuracy wasn't that great. I am hoping for improvement. or is it that the 458 win mag doesn't usually like lighter bullets?

20 February 2002, 14:31

Ken Cline

Barnes new manual recommends RL7 or H4198. Charge weights are the same with both powders. Starting- 64.0 grains for 2390 FPS and max at 69.0 grains for 2570 FPS. Hope this helps.

Ken

20 February 2002, 18:34

ricciardelli

My Winchester 70 prefers the 500 grain bullets...but the best results I got with the little 300 grainers was using IMR-4198.