Hello
Befor i but a martini henry rifle I want to be sure I can actually form my own cases from the 24 ga shotshells. There is a video on youtube showing a full length sizing die bored out to 9/16" to use as an intermediate forming die. I am try to find out if that is all that is needed to be done to the die. For example does the opening need to be relieved at its base?

any advice is gratefully accepted
Information
Warning: This is a relatively older thread
This discussion is older than 360 days. Some information contained in it may no longer be current.