A:
Just to be safe I would ask a trained gunsmith, or contact the manufacture. However, most likely that is a myth, two reasons I am saying this first of all the primer takes alot of force to ignite and I believe all of the core-lokts have an exposed lead tip to them, which allows for some space to be compacted taking off some of the pressure from the primer. Also I have a friend who has been hunting with them who uses a pump action 30-06 which is tube fed much like the model 94 and he has never had any problems with them in over 20 yrs.
(again I would not just rely on my opinion ask a gunsmith/manufacturer)