Lucas your story just doesn't hold water . I have been hunting with , and working on the 760-7600 series for 40 years . I have been reloading for them just as long . They are as popular here in VT , as they are anywhere ! Once in a while you will encounter a pump that needs to have it's ammo resized with small base dies , but they are an exception , not the rule ! If you use SB dies for a gun that doesn't need them , and bump the shoulder a little too hard , you can creat a situation that will resemble excessive head space , when inspecting the brass fired in said gun . It won't be verified by a Go-No Go gauge though !