If you shoot until the barrel is "sizzling hot", then you are destroying the barrel's throat area and before long, accuracy will be a fond memory.
Never shoot a rifle that you'd like to keep for a while until the barrel gets sizzling hot. If it's too hot for you to grab and hold onto, you've just screwed up.
The best bet is to let some time go by in-between shots, with the action open.
Personally, I run a bore-snake, wet with Hoppes#9 through the barrel every three shots. - It cleans out some of the crud, and cools the barrel from inside.