I have always FL sized with the cam over method as the die instructions taught when I started reloading 30+ years ago.
I am able to get most hunting rifles to shoot well under 1 inch groups and most into 1/2 inch groups.
I only neck size in my 300 win mag because when I got it close to 30 years ago my uncle who shot magnum rifles told me to.
I have never FL sized that brass and I can't even guess how many loadings it has.
Just how I do it and it has worked very well for me.
