Sorry I have been absent (current state of the world and what have you).
That is what I needed to know. The sizing discrepancies led me to assume that ‘brasslead’ will foul the hell out of the barrel. Nevertheless, I was successful at saving around .49-1.00 a round at the range.
That said, I was highly disappointed with the .40 in general. Armscor and Federal Ammo went through and seemed to have a very inconsistent grouping (Federal outdid Armscor). 10 mm Federal Ammo and Underwood grouped .5 or less at 20 yards. I think it has something to do with the velocity of the 10 mm over the .40 (I do not want a .40 v 10 mm thread as that has been done waaay too much, lol).
I appreciate the assistance. My Underwood ammo is filthy as hell. +P really can be a dirty whore if you don’t clean the bore.