So I have never had an issue with lee dies, but loading my first .303 Brit cartridges I loaded I had a problem with too little neck tension. I could pull some of the projectiles out by hand. Brass is new prvi, and (despite never following lees FL sizing die instructions) even bottoming out the die (and then some) per the instructions still yields case necks with an inner diameter of .310/.311. My caliper mics the expander ball out at .3105 (though I don’t trust its 1/2 increments).
I’m loading Speer hot core .311 projectiles. I am thinking about chucking the expander ball in a drill and spinning it on a cloth embedded with valve compound. I think I would have fewer issues if ID of necks was down to .309. Anyone else have any advice or opinion on this? Anyone experienced anything similar?
I’m loading Speer hot core .311 projectiles. I am thinking about chucking the expander ball in a drill and spinning it on a cloth embedded with valve compound. I think I would have fewer issues if ID of necks was down to .309. Anyone else have any advice or opinion on this? Anyone experienced anything similar?