[Rapier]

jalewi,
Try the cheap stuff to do first. This is a used rifle that you bought. Go get a bottle of Shooter's Choice. Get a chamber plug or wood dowel to fit the barrel/chamber junction. Remove bolt, tap the dowel in place to seal the chamber and pour the bore full of Shooter's Choice set the gun in the corner to soak for 1 week. After a week, pour the liquid out, back into the bottle using a funnel, remove the plug. Now, scrub the bore with a bronze brush. You should get chunks of copper and the bore should be slick and back to bare steel. If not, repeat the process until the bore is clean.

I have returned many used 700s to great shooters using this prochedure. 98% or better of the folks who own a centerfire rifle haven't a clue how to clean the bore.

Before going back to the range try the dollar bill trick to make sure the barrel is free floated. If it is not free floated cut a credit card into narrow strips and put three strips into the recoil lug slot in the stock, tighten the screws for the action. Check the barrel again for clerance. If clear, go shoot the rifle. You can glass bed the action later.

If you still have problems, switch out the scope with another scope. The Bushnell line was a decent scope 40 years ago but now they are not so good.

Best of luck. Oh, I have a 1941 Win Mdl 70, 06 that would not shoot for beans, it had a "burned out barrel" also. I did the Shooters Choice soak to it. It shoots .30 inch groups with 150 Remington's now. It had 50 years of copper in the bore.
Ed