Well Captain Obvious it appears once again you are correct in your assumption. And if it were me, I wouldn't screw around with those smaller balls and as much as you like to cast, I would remelt them and cast more .575" balls. That is unless you have a rifle that shoots the .562" balls. That second target is really some good shooting and looks like you have found that rifle's combo.
You must be getting tired in your old age. Your reports are getting very short. Ahh its probably the heat down there getting to you. Its OK, sit on your rocker in the AC and sip on some lemonade or sweet tea and relax.