Maybe try turning your sizing die down a little bit more to get some cam over. I have the same issue with a friends brass versus my brass in 7mm-08...I had to turn the dies down almost 1/4 turn to get his brass to chamber in his rifle.Not sure how much of a oops this was as a rookie mistake, but I ran all my .270 brass through a Weatherby Vanguard I was struggling to get accuracy with. All of it fire-formed to the chamber of the Vanguard and now it won't even chamber in my Tikka. They will chamber in my wife's Rem 700, but not without some resistance.
I didn't try this with all of them, but on some I turned it all the way to the point of almost touching the shell holder. Didn't make any difference.
I would follow the instructions on the die...most of the dies I have say to touch shellholder and other say to turn 1/8-1/4 turn beyond touching. Unless you goal was to bump shoulder in that case I'd only turn the die in until you got your shoulder bump.
I had the same issue with a 257 Weatherby. Everything I sized just never seemed to be right. Went and grabbed a different set of dies followed the instructions and bolt closed way smoother. I chalked it up as it was the dies as it seemed to go away after buying a different set of diesNot sure how much of a oops this was as a rookie mistake, but I ran all my .270 brass through a Weatherby Vanguard I was struggling to get accuracy with. All of it fire-formed to the chamber of the Vanguard and now it won't even chamber in my Tikka. They will chamber in my wife's Rem 700, but not without some resistance.
