Originally Posted by CMFECTU
Left to right:
7.62 X 54R loaded with a FMJ lead core boat tailed bullet. EDIT: This appears to be a 8 X 56mm R given the shoulder angle and neck size. However, they are typically 2mm shorter than a 7.62X54R, and this appears to have the same overall length as what I am sure is a 7.62X 54 R in the 3rd cartridge. It is NOT a .303 british, so while rather uncommon, this seems to fit the shoulder junction and neck shapes best.
.30-06 M2 AP as evidenced by the manganese-molybdenum penetrator core encased in a thick copper jacket and a lead filled tip.
Also 7.52 X 54R loaded with a steel core in the light ball variant
A Korean or Albanian produced 7.62X39 cartridge jacketed steel core with lead tip
7.62 X 35 (300 Blackout) using an all copper exotic bullet, likely a 110 grain Lehigh Defense HV Controlled Chaos Bullet
5.56 Nato M855 cartridge, which as the designation indicates is a copper jacketed steel base bullet
9mm Luger using a solid copper bullet, likely a 125 grain Fort Scott Munitions TUI bullet.