Why doesn�t a-square make a hard expanding bullet for they own 577 Tyrannosaur...?

Can you buy special bullets from swift or thorpy bonded in caliber 577/58...?

This is only a guess, but since the .585" bullet has such a large frontal area/sectional density and dont travel at hyper velocities, the bullets need to be designed for penetration and thus not expand into a 'mushroom' shape.

Overkill, Since the vast majority of 585 cal. rifles are chambered for the 577 Nitro Exp. Bullets in 585 Cal. are made to expand at the much lower 577 Nitro Express velocitys.

Overkill, get some of the Woodlieghs, they are designed just like the older Kynoch bullets and will work at higher velocities. I have used them in 416 and now my 500 AHR.

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AlleninAlaska