Two things... first, do not use live rounds to see how the bolt cycles and rounds feed from the magazine in your house. You are risking an accidental discharge.
Second, you may have head space issues. Last year I had to send a M7 - same action as a M700 - back to the factory because after firing a round it was next to impossible to cycle the bolt due to head space issues. To Remington's credit, they corrected the problem and returned the rifle to me in a timely manner. If your rifle is new, contact Remington.