The Accurate Reloading Forums
Expander Ball Modification

This topic can be found at:
https://forums.accuratereloading.com/eve/forums/a/tpc/f/2511043/m/666108997

20 January 2008, 20:07
Jim Hundley
Expander Ball Modification
I just recieved a new Forster F/L die for the .300 Win. mag. It produces sized brass with .001< runout at the neck. However, I would like more bullet grip. Is it advisable to chuck the expander assembly into an electric drill and turn down the expander ball with emory cloth to increase bullet grip? I have never attempted die modification and need the thoughts of the experts.
Thank you,
Jim
20 January 2008, 20:16
GeorgeS
It's neither new nor complicated.

Go slowly and measure the expander ball frequently.

George


20 January 2008, 20:41
Jim Hundley
Thank you, GeorgeS. Heading to the shop!
Jim
20 January 2008, 20:54
ramrod340
I've done it several times. Like George says go slow and measure often. An Oops means you buy a new expander.


As usual just my $.02
Paul K
20 January 2008, 21:03
kraky
How much bullet grip are you shooting for? If you measure inside the case mouth what dimension are you getting? I personally like it to measure about .304-.305....anything less I wouldn't like....anything more and your seated runnout may start to suffer a tad.
20 January 2008, 22:27
Jim Hundley
Kraky,
check your personal email.
Jim