I recently had a new barrel put on a 7mm Rem. Mag. Previous reloaded ammunition was firing fine in the gun before I had the barrel change. Now, after firing the bolt will lift easy but I can't pull the bolt back to eject the cartridge. A couple taps with a plastic mallet and it will open. The gun is a late 70's model 700 ADL Remington.
The loaded cases measure .508 just above the belt before firing. The fired cases measure .515 after firing. They are expanding .007 according to my math.
Question: What is wrong? Head space to long? Bolt problems? Load too hot? (160 gr. Nosler Accubonds with 64.0 gr. H1000 seated 2.770" with Hornady Comparitor MV 2683 checked Sunday 10/7/12) I do not have the measurement to lands of the new chamber.
I would appreciate your earliest responses as unfortunately our hunting season is upon us and I may be gunless for an elk unless I get this problem fixed.