"Make Ready" is the command to take a weapon from Condition 3 to Condition 1.
Chambering
No. It is chambered for the .45 ACP cartridge.
A cartridge is being chambered.
Depends on what ammunition it is chambered for.
Yes
No. The magnum CARTRIDGE case is a larger diameter than the LR cartridge. A LR cartridge fired in a magnum chamber would split the cartridge case.
Only ONE cartridge at a time can be chambered (loaded into the chamber, ready to fire). The internal magazine holds 5 cartridges- waiting to be chambered.
7.62x25 is the Tokarev pistol cartridge. No manufacturer currently makes an upper for that cartridge.
.45 gap is a shorter cartridge and can only be safely fired from a gun chambered for that specific cartridge.
Depends entirely on the firearm. With repeating arms, it will be operation of the action. That can be cycling the bolt, lever, pump or operating handle. With a single shot it is placing a cartridge by hand in the chamber.
The lips of the magazine are designed so that a cartridge will not be able to leave the magazine until the cartridge is pushed forward when being chambered.
The M16A4 assault rifle is chambered for the 5.56x45mmNATO cartridge, which is of the .223 caliber.