I have been wanting to get in on the brass shotshell fun. So, I was thinking about ordering some .410 Magtech brass. Then I thought I might also order some 20 gauge brass shotshells also. But, then I started thinking about possible sizing problems. I can manage to get the .410 sized if I need to, but I'm not sure how I would get the 20 gauge brass sized. So, my question is, do you eventually have to size the brass with low to medium loadings, and if so, what would you size the 20 gauge brass with?
I have an old Mossberg 20 gauge bolt action shotgun that would be perfect to experiment with.
Thanks,
Keith