Sad part is that many of the replies to this post are by folks that do not have experience with various actions. Most of the action types have different methods of head spacing just to start with. Example, the Mauser head spaces on the face of the of the action, no it does not, it head spaces on the inner ring and locks on the face. The 700 head spaces on the face of the action, no it does not, it head spaces on the recoil lug and it takes a tool to properly place and hold the removable recoil lug in place so it can be locked down by the barrel. You do not use a wrench on a rifle barrel, unless it is a strap wrench used on an older style rust blued barrel. A barrel vice is used on the barrel, an action wrench is used on the action. Do not use an insert action wrench to break a factory action loose from a barrel, it will twist the action, sooner or later, just a matter of time.
The correct answer to the original, post is, if you do not have the proper tools and as important, the experiance to use them, take your rifle to someone that does.
Ed