With the 105 amax, I'm comfortable to 750-ish. (Edit: but thats only because I haven't run that bullet farther than that yet on steel, in that chambering.)
Shot a big muley at 484 last fall, first one was hard quartering in front of the onside hind, and it rolled him hard at the hit. He did manage to get back to his feet, and since the shooting is the fun part I put a second one broadside through both shoulders just for giggles.
That one smashed him off his feet as well.
Mind you, that was with the AI version. A plain jain 243 is only good for women and kids, and only then if they keep the shots broadside and under 100 yards from a concrete bench. And you should probably keep a 375H&H handy for the follow up finisher that will be required........
With all due respect sir, I'm calling BS on this one. Everybody knows nothing less that a 50 BMG will suffice for a backup to a .243. Should the concrete bench not be available, a 37 mm. anti-tank weapon would be the bare minimum for a backup.
