Why with tube-fed firearms, you can't simply release the bolt after reloading and continue firing?
Last round just teleports into the chamber, ready to enter the barrel right after pushing all 4 rounds into the tube.Diagram 3 (from John Wick 3): Charon pressing the shell release lever. This action takes place before he pulls the charging handle back; the film shows a very clear close-up of it; also notice that this operation is performed with the bolt already in the closed position.Diagram 4: Positions of shell release lever, shell stop and the last shell in tube (the lever has already been pressed and the last shell is sliding into the chamber).Diagram 5: Front end of the shell release lever goes down & the back end of the shell stop goes in (red box) and the front end of shell stop goes out (blue box), last round gets to move back above the shell carrier, ready to be chambered.Diagram 6 (From Call of Duty Modern Warfare 3): Expedite 12's inspect animation. The character pulls the charging handle back and a live round is ejected from the chamber. After checking the bullet the character simply puts the charging handle back again to put it back into the chamber. Wouldn’t the charging motion cause another round to enter the chamber? Why doesn’t this result in double-feeding or other malfunctions?Diagram 7: See the red mark in front of the trigger? That's the shell release lever stopping the shell stop and the shell stop stopping the shell (the exact opposite of the conditions shown in diagram 4 & 5). Not a single round is coming into the chamber unless you press that red mark up into the gun.
