Re: 7mm Mag brass
Bump the shoulder as in just enough the you don't feel resistance closing the bolt? Are your primer pockets staying tight? Do you anneal your case necks? If your not pushing pressures, minimal case working during resizing and annealing, I don't see why a guy can't get 10+ loads on a case. Norma case are known to be a bit on the soft side you might see less, to bad lapua doesn't make 7mag brass.
One thing you can do to check for incipient case head separation is, straiten out a paper clip and bend a hook on the end, so you can feel the inside case wall near the case head. If you feel a grove there you might want to consider tossing those cases into the recycle bin.
Keep in mind the animals we shoot for food and display are not bullet proof. Contrary to popular belief, they bleed and die just like they did a hundred years ago. Being competent with a given rifle is far more important than impressive ballistics and poor shootability. High velocity misses never put a steak in the freezer.