9MM vs 40 CAL vs 45 ACP vs CINDER BLOCK
This test compares 9mm, .40 S&W, and .45 ACP against cinder blocks. Surprisingly, the .40 S&W demonstrated superior penetration, piercing the block while the 9mm lodged and the .45 ACP ricocheted with significant spalling. The results challenge expectations, highlighting the .40 S&W's effective balance of velocity and mass for this specific medium.









