BigDog also owns and shoots a couple 2 bores - so - owning 3 .600 Overbores, is pretty much SOP - standard operating procedure. Not for me.

As to velocity reducing penetration - with softs or solids that deform at higher speeds, this MUST happen. With a real solid that remains in one piece and original shape as well as staying stable - I'd think the higher the speed, the greater the penetration? Isn't 3,000fps or more used to penetrate tanks in rifle ammo (if you call a 30mm cannon a rifle, that is - with depleted uranium bullets, of course)

We also know that the buffalo hunters oft-times, even with the .40/70/340's and the larger case and calibre rounds which shot even heavier for calibre bullets, up to 540's in the .45 calibres, killed 2 buffalo with one shot. Lead bullets, case as well as factory swaged. The swaged bullets were fairly soft, as needed for that process. The initial velocities barely or never exceeded 1,450fps at the muzzle which limits expansion and the buffalo were killed at hundreds of yards distance in many instances. The written records of these 'events' are re-printed in Seller's Book on the Sharps rifles.

The only reason I added this rather anecdotal post as I find all of this 'stuff' rather interesting and food for thought and discussion.