Not anymore, Federal Lands are open to carry, concealed or openly. Has been that way for a few months now. Still places like campgrounds or gatherings of Federal Employees, Federal buildings and grounds are off limits. It is subject to States Rules. If you are CCW certified, you can carry concealed, otherwise, open carry is allowed. You can hunt on ONSR Lands with proper licenses.
Someone breaking into a truck is hardly justification to end his sorry life, but, if it had been me, he would have been looking down the barrel of a loaded weapon or retreating very fast.