Gotcha.

I have no experience on DG so I'll defer to yours.

I have read that the old Kynoch softs were variable in their performance and some bullets fragmented very badly. I'm not sure if this applied to the .416 or not.

I remember reading Elmer when he referred to the very poor penetration he obtained with Kynoch 300 grain .333's. Bob Hagel said the same thing about that bullet.

I'd love to run a few of those oldies thru my jugs and boards and compare with the modern slugs...for smiles and giggles.

I did some tests with Remington 220 Core-lokt .308 cal bullets run at 2450 fps and shot against the 300 grain Hornady .375. For expansion and depth of penetration, the Hornady didn't look much superior by comparison...