Some Remington 700 ADL plastic stocks have two small bumps that just touch the barrel at the muzzle end of the stock. They are there to keep the barrel centered in the channel, but they usually, but not always, touch the barrel. You may be able to sand those two bumps off and the barrel may no longer touch the stock.
I use two dollar bills together to slide under the barrel see if there is clearance all the way back to the recoil lug. If not, start sanding.
Plastic ADL stocks really suck, in my opinion. Other than adjusting the trigger, that is the first thing I try to upgrade when I buy a 700.