A. .303 British, headstamp is for certain
B. 8mm Mauser
C. 8mm Mauser
D. 8mm Mauser
E. 8mm Mauser
F. 8mm Mauser
G. 8mm Mauser most certainly due to the headstamp
H. First thought was 8mm Mauser but the case looks a bit too straight, can you clean the headstamp off for us?
I. Best guess is 7.5x55 French due to the primer ring
J. 6.5 Carcano what the fuck is that doing there?
K. 8x50R Lebel
L. Projectile from .50 BMG