Hi Mike,
It's always great to get a new gun.
I had a 710 in 270. The bolt is in a nylon receiver on the 710. Although my bolt was never smoothe to operate it never got stuck to the point i couldn't pull it anymore. I did eventually have a problem with the bolt where It became a huge chore to lock it up. Sometimes i couldn't ever get it to lock up.I eventually traded the gun in.
That being said if you have a new 710, i was under the impression that the gun now has a metal receiver.
There are folks that have had issues with this gun and there are others who have had no problems.
BTW. Mine always shot well
Good luck with yours