I neck sized once fired brass and ran the unloaded brass through my Rem 700 to make sure it wasn't too tight. They all went through just fine. Now I loaded a round and it seems very tight to chamber. Seems like the brass just below the should is tighter because it got real shiny there after I chambered the round a few times. Is this abnormal? I thought they would be tight, but only after a few re-loads on the brass. Is there anything unsafe about using rounds that are tight in the chamber? Lastly, are there "real world" benefits of neck sizing as opposed to just using full size and backing off the die a bit so it just bumps the shoulder?