If there's a potential for multiple running shots at 100 or 150 yards, of which djones makes routinely, i'd go with a flatter shooting 308 with more killing power. If shot placement is iffy, such as with multiple running targets at longer distances, the 223 won't drop them as easily as a 308 will. I don't believe that can really be debated.
The 300 BKT drops like the BB's out of the cheap Daisy lever actions that we used to have BB fights with. Dave tried the round (I believe he used the lighter Barnes offering) on pigs and subsequently got rid of all his Blackout stuff.
