It is the image that a shooter sees when looking through the sights of a firearm at a target, and shows the alignment of rear sight, front sight and target.
A good sight picture and steady arm works wonders for hitting a bulls eye..
Some you can.
A double tap, not a controlled pair, is a shooting technique where two shots are fired at the same target with the same sight picture.
Most ranges do not provide firearms. There are some that RENT firearms for use on that range.
Aiming
Aiming
Hearing and eye protection.
J. Henry Fitzgerald has written: 'Shooting' -- subject(s): Shooting, Firearms
You raise the rear sight. Actually the pellet gun is shooting straight, your sight is aimed too high. By raising the rear sight you are bringing the point of contact lower into view.
The noise of a firearms discharge often exceeds the safe decibel level for human ears.
There ARE no websites that teach "EVERYTHING" about firearms- I have been a student of firearms for over 50 years, and I am still learning. Firearms are an incredibly broad topic- I would suggest you narrow down your interests a lot, and find some specific aspect of firearms you would like to study. That might be the history of firearms, rifle target shooting, hunting, skeet shooting, etc.
A ballistic analyst is the one who studies and collects evidence that is related to firearms and ammunition. They are also the ones who identify the firearms used in the shooting.