Complex sentence: When the first unit used this gun to shoot the death scene, the chamber was loaded with blanks which had no bullets; however, there was still the bullet in the barrel, which was propelled out by the blank cartridge's explosion.
Split into simpler sentences: When the first unit used this gun to shoot the death scene, the chamber was loaded with blanks which had no bullets. However, there was still the bullet in the barrel, which was propelled out by the blank cartridge's explosion.