gamestalker
member
A couple of thoughts. I once had a .270 that would separate brass in the mid body, never figured out why. So that's always a an area of inspection I perform.
As for FL sizing, and especially so with brass that's been loaded 5 or more times. Presses will flex, quite a bit actually, so making sure you are effectively setting those shoulders back, or enough, can be deceiving when using methods that halt FL die adjustments at first contact with the shell holder. I have run across this on a number of occasions in which the press was flexing more than I thought, so I wasn't getting the amount of shoulder contact I thought I was. Sometimes the amount of cam over necessary to get the job done may seem extreme. At full ram extension take a look between the shell holder and the die to see if they are touching.
And also measure the area just above the extraction groove and below the line where the FL die stops to see if it's beginning to expand. I've noticed that with brass that I'm loading fairly warm loads through with neck sized brass, it will begin to expand that web region slightly, this will cause the brass to stick a bit.
As for FL sizing, and especially so with brass that's been loaded 5 or more times. Presses will flex, quite a bit actually, so making sure you are effectively setting those shoulders back, or enough, can be deceiving when using methods that halt FL die adjustments at first contact with the shell holder. I have run across this on a number of occasions in which the press was flexing more than I thought, so I wasn't getting the amount of shoulder contact I thought I was. Sometimes the amount of cam over necessary to get the job done may seem extreme. At full ram extension take a look between the shell holder and the die to see if they are touching.
And also measure the area just above the extraction groove and below the line where the FL die stops to see if it's beginning to expand. I've noticed that with brass that I'm loading fairly warm loads through with neck sized brass, it will begin to expand that web region slightly, this will cause the brass to stick a bit.