Thread: Increasing case neck tension

Hi team,

Came across a big issue on my latest hunting trip this weekend.

A number of my handloaded 7mm rem mag rounds which had been in a 20rnd ammo case had slid upward and hit the lid of the plastic case, resulting in the projectile being pushed beyond its set seating depth!

A number also did this when feeding from the magazine.

When I got home I found I could pull the projectile with some decent pressure using my fingers on 60% of the loads. Grrrrr.

Anyway I'm using a Lee neck sizing die with a lee classic press. I didn't have this issue when the brass was fresh, but now that it has been shot once this issue is appearing. It is something I have not come across this before.

Anyone have any recommendations for increasing neck tension so that this doesn't happen. I don't really want to have to crimp them.

Cheers team.