Your question is ambiguous, assuming by capsule you mean the shell casing then this is also not the case in every weapon.
Shell casings are ejected when the weapon is fired if it is an automatic or semi-automatic weapon.
Revolvers, for instance, do not eject the spent cartridges.
By Newton's third law of motion, for every action, there is an equal and opposite reaction. When a gun fires a bullet, the bullet gains momentum in one direction, causing the gun to recoil in the opposite direction with an equal amount of momentum. So the momentum of the bullet is equal in magnitude to the momentum of the gun, but in opposite directions.
Bullets will drop almost the same vertical distance in equal time. The limitation is the vertical drag force on the bullet. If fired in a flat trajectory, a bullet will start with no vertical velocity. As it continues on its path however, the force of gravity will impart some vertical velocity to it. Initially the vertical component of the drag force will be negligible, but the longer it flies, the faster it drops. At some point the drag force becomes noticeable and the roughness of the bullet surface and geometry of the bullet begin to play a role in how much vertical drag force is exhibited. Most of the time a bullet will hit its target before this effect makes much difference, but if you fired two different bullets from the top of a very high mountain and tracked their flight you would probably find them dropping at different speeds towards the end of their flight.
Technically, yes. There are many variables to consider though like recoil, wind resistance, the barrel of the weapon, etc. The Mythbusters actually did that test. You could probably find that video somewhere.
If mechanical energy is conserved (like, if you did this on the Moon, where there is practically no air), when the bullet gets back to the ground it must have the same speed with which it started out. In practice, it will be less, due to air resistance.
No, the shot bullet will land after the dropped bullet. This is because the shot bullet has an initial horizontal velocity in addition to the vertical acceleration due to gravity, while the dropped bullet only has the vertical acceleration due to gravity.
The same as any metal.
A bullet fired parallel to the gound, over flat ground, and a bullet dropped at the same time from same height will hit the ground at a time so close to each other as to be the same.
The same thing that happens whenever ANY firearm fires accidentally: The bullet will leave the barrel at a high velocity, and anyone/anything in that bullet's path will be hit. If there is anything flammable near the muzzle, it could catch on fire.
All bullets drop at the same speed.
A bullet with less grain (i.e., lighter weight) generally experiences more drop over a given distance compared to a heavier bullet, assuming both are fired at the same velocity. This is because lighter bullets are more affected by gravity and air resistance, causing them to lose velocity more quickly and drop more. However, other factors like ballistic design and environmental conditions can also influence the bullet's trajectory.
The typical AR15 fires the same type of bullet as the M16: a .223 caliber (5.56mmx45mm NATO) round. There are AR-15 rifles that have special barrels made for a variety of popular cartridges, even the little .22LR.
22 hornet is a 22 calibre rifle. Most think of a 22 rifle as a rim fire rifle. But it shoots a 22 calibre bullet but the cartridge case that fires the bullet is no where near the same. The Hornet holds much more powder and is center fire.
When a bullet is fired from a rifle, a chemical reaction in the gunpowder ignites, rapidly expanding gases build up pressure, and the bullet is propelled out of the barrel at high speed. The rifling in the barrel causes the bullet to spin, improving accuracy and stability. Gravity will eventually cause the bullet to drop due to gravity and air resistance.
They would hit at the same time. Gravity acts equally on both.
For every action, there is an equal and opposite reaction. Now the bullet is light (low mass) so when a certain amount of force pushes the bullet forward and the gun backward at the same time, the bullet moves fast. The gun is heavy (great mass) so it is slower to accellerate rearward. It will never reach even a small fraction of the velocity of the bullet. But since force = mass times velocity squared, there is an equal amount of energy in the bullet and the butt stock of the rifle.
Yes, they are probably the same thing.
The bullet is pushed out of the barel at high speed by expanding gasses from the burning gunpowder. At the same time, the gun is pushed back by the recoil. This is the "equal and opposite reaction" mentioned in the Laws of motion.