Found the reason.
O.a.l. MUST be 2.6" or less. Any longer and rounds 4&5 will hang up.
I even tried some loads with .30-30 bullets in the reformed cases. O.a.l. is 2.57 and no issues whatsoever.
Apparently, my 99EG is SUPER length sensitive...


Keepin my back green and my powder dry.
The LORD bless and keep you