RE: 7mm mag and 120gr barnes x @3500fps
The performance story he is telling for the Barnes X sound plausible to me. I have tried the 140 grain X Bullet in my 7mm Remington Mag. Penetration was awesome, but I was disappointed in the accuracy. I was unable to work up a load that would consistently shoot under 1”@ 100 yards. Since the rifle I was working with will consistently group Nosler Ballistic Tips under 1/2”@ 100 yards, I found the accuracy of the Barnes unacceptable.
You can’t use data for conventional bullets of the same weight because the Barnes X being all copper is lighter than a conventional bullet of the same dimensions. In my 7mm Mag I found the difference to be about 10 grains. Meaning that the 140 grain X Bullet was almost identical in dimension to a conventional 150 grain bullet.
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