Howdy all I'm in need of your experience. I have about 15 years experience in reloading, shotshell, bottle neck rifle and revolver rounds. I have a cousin that wants to reload for a glock 22 in 40 cal. I told him I would help but he mentioned asking questions to others and they mentioned pass thru sizing of the brass.
Now I will admit im ignorant on this, I have heard of it but have not done it. Does one really need to do this? As of right now he will be useing the dreaded j-word bullets.
Thanks
Dawg