Expander Question

[Lee Q. Loader]

I got a new expander from RCBS for my .223 small base sizing die. It measured .2235! Caused me a lot of problems. That's another story about my disappointment with RCBS.

So now I chucked it in a drill and polished with emery paper. Whoops! It now measures .2215. I wanted to take down to .222 and I obviously messed up.

What do you think? Too much neck tension?
Thanks

 

[FROGO207]

Shluld work OK if you are loading boat tail bullets. If you chamfer the inside of the neck flat base may work as well. Just call RCBS and get a replacement expander button. Just be more careful next time.

 

[reddog81]

I don't think too much neck tension will matter with that small variation in size. I think getting the bullet seated straight and not crumpling the neck is going to by your biggest concern. Chamfering the inside of the neck will definitely help.