The eld-x 162 is a different projectile to the amax. Its .055 longer , mostly in the bearing surface. I think you might struggle with a 10.25 twist. I ran a few through my 10 twist 280ai which is very good with the old amax but results were not flash and even if they had worked the lack of stability would knock the BC way down which in turn defeats any advantage they might have had.
Id look at the 150gr nosler balistic tip.
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