Originally Posted by Riflecrank
OK slept on the 1:10" twist barrel idea.

22" medium contour barrel (#5 sporter) on FN M98.

26" heavy contour barrel (#6 sporter) on M70 classic.

Hedging the lengths so as to be useful for special purpose and general purpose loads.

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And nowadays the 3.340" COL and 60,000 psi SAAMI .458 WinMag makes a bloody big hole through anything needing a bloody big hole,
in the most practical manner.

I have no idea what the actual contours of the M70 Super Express at 22" and the Mark X / Whitworth at the near 24" equate to, but I like them both for a general purpose rifle. The Mark X / Whitworth may eventually receive a trim to 22 or 21".

I think the barrel contours for the Winchester 375 H&H Safari Express and stainless classics also are more appropriate to 458's. Though not too shabby in .416.

Edit = I fully agree on the 1-10". No idea how that would do with hard-cast powder coated bullets ??

Last edited by ldmay375; 05/13/22.