Thread: tight closing the bolt

Unclear if the once fired cases were fired in the new rifle/chamber. I'm guessing not. Need to FLS. Check trim to length. Try before loading (should do that as part of FLSing process at any rate. May even need to use a small base die.

The ink on neck test (permanent marker) is only useful if 2 or 3 full length stripes are marked on the case. I'm guessing it will identify tightness down the body which FLSing should rectify. This is assuming the OP has measured the shoulder datum point and compared against a factory round. OP doesnt say if that measurement carried out. Also depends upon what the chamber is like in the rifle they were once fired in. Again, I'm assuming the cases weren't fired in the new rifle initially. The chamber they came from may have been at the upper limit of SAAMI specs whilst the new rifle may be at the bottom.

I long ago ceased neck sizing.