What to do, what to do?

So there's this box of Hornady 500gr FMJRN .458" bullets sitting there on my office desk, courtesy of a friend who no longer had a need for them.

Of course, I have a Ruger#1S chambered in .45 Government, aka .45-70. That means one thing to me - Thumper .45-70 loads!

Here's me setting up to make a small batch, using my trusty Huntington's Compac Press and those ancient German Craftsman dial calipers:



That's a compressed load of IMR-3031, by the way! I ended up making 25 of the artillery shells, with 5 destined for the shellholder in the Ruger's sling:



The muzzle energy calculator says they'll deliver 3600ft/lbs of whoop-ass as they depart the barrel. That means your's truly will be shooting them from the offhand position. No way am I riding them from the bench!

The big question now is what to shoot them at? I have ideas, to include an old V8 engine block, or something similar. Maybe I should schedule a trip to visit Mr. Box-O-Truth...