Congrats to the hunter. That is way cool and a rather large javy. The .223 is an excellent caliber for javy's. and anything else we have in the southern part of the state. I have been using mine for the last 15 years on coues, muleys, and javalina, not to mention the varmit side of things. And my #2 daughter took her first animal this year( see #2 fills her tag) with that same rifle.
But I don't know about having a hunting rifle with a clip that big. I think the G&F say no more then 5 rounds. Just thinking aloud, but something you might want to check on. Dont want anything to take away from that hunt.