We're not talking about a Hornady SX, in which excessive velocity or twist rate will rip one apart before reaching the target. The question was not in general about a frangible bullet but about the Barnes Triple Shock.
I have fired that exact brand & diameter of bullet he's asking about in twists from 1:7/7.5 (considered on the fast side) to the more conventional 1:9, and given virtually equal 200 yard impact velocities, there were NO differences in depth of penetration, expanded diameter, wound channel, retained weight, etc.
