Preventing an overcharge or undercharge

[JV_]

An interesting powder check system:

http://bulletin.accurateshooter.com/...-progressives/

[Zhurdan]

An interesting powder check system:

http://bulletin.accurateshooter.com/...-progressives/

Works like a champ. I don't reload without it in place. Definitely worth the price.

[Pepper]

An interesting powder check system:

http://bulletin.accurateshooter.com/...-progressives/

I have used RCBS Lock-Out dies on my progressive for straight walled cases for over 5 years and they work great once you get them set correctly. Still do a visual as a backup, but have never had a problem.