That's getting about as close as any centerfire load I've heard of to 22LR cost per shot. Not sure what the 4759 goes for today, but I'd venture $28/lb or less, so under a 10cent bullet, you're looking around 13cents per shot. The cheapest I tend to run is 223rem with 20grn of 4198 under bulk 50grn pills for 8c per bullet and the same per shot in powder, so I shoot 16cents per round with that load.

Mine truck a little faster though, so like Superhunt mentioned, if I'm hitting squirrels with a 223rem, it's headshots or mid-body, otherwise nothing worth stewing.