Reloading question need advice

[17remhunter]

New Peterson brass every case was perfectly uniform in weight and length. After the first firing I measured the case length. Instead of the case stretching a little it was shorter by .015. Every case. Is this normal. The cases were 6 mm Creedmoor

Second question I have some new 17 Remington Nosler brass all prepped. I did nothing to the new cases just loaded them up with my standard load. They would chamber but i could not drop the bolt handle. I chambered a new unloaded case same thing. Could it be that the shoulders are a tad bit to forward and need to be bumped back or should I FL size each case? I have no issues with new Norma brass

 

[Wolfshead]

You should FL size each case before loading them.
After you can FL size or neck size them to your preference.
But you do need to size them first.