I am sitting here scratching my head over this one
I just began to load for my 270 WSM last night, 40 W/W nickel cases once fired in that rifle that, as once fired untouched brass, drop right in and bolt closes with no effort - I set up a new Hornady seating die using Redding benchrest case holders #10 then sized with the #2 - I can see that the neck is getting sized to the base - I sized all 40, trimmed them, deburred flash holes and chamfered mouths and then .... I can barely get the bolt closed on any of them and I mean barely .... I have worked brass for belted mags, standards and small rifle by the 1000's before and never encountered this ! SO, am I learning a "new lesson" or missing something ??