I honestly like the TEZs better, they group better for me then the boat tail TMZs. I Chuck the Barnes sabots and use Harvester Crush Ribs.Just scarce I think. Sierra bought Barnes last year, I heard - could be part of the problem.
This place claims to have them online.
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Have you tried the 290 TEZs? They’re still easy to find. Different sabot and non-boattail but otherwise the same bullet.