i just bought a model 111 .300 win mag a few days ago, i love the gun but hate the fact after 3 shots or so you have to let the barrel cool off in order to maintain accuracy.

can somebody please help me find the barrel i need? id like to have one with a muzzle brake and something to withstand the heat more so i can shoot more than 3 or 4 rounds before taking a break, i do mainly target shooting now but hunting is in the future.

any suggestions tips or comments are appreciated!