Air guns and rifles are rated by their FPS (FEET PER SECOND) they shoot at different speeds depending on the model. An example is a Daisy Red Ryder that shoots at 350 FPS but a Benjamin Marauder fires a .177 pellet at 1100 FPS. The slowest pellet gun I know of is the Marksman model 1010 that fires at 250 FPS.
It's rated at 140FPS.
It won't fit in the pistol.
Some air pistols are designed to shoot both, but you have to read the owners manual to determine if your pistol can shoot either. It the manual says to just use one or the other then don't ruin the pistol by trying to force it to shoot the wrong projectile.
No. Wrong size.
It will shoot pellets or bb's. They normally use an air cartridge.
Between 900 to 1200 FPS depending on the charge and bullet weight
The Colt 357 is NOT designed to shoot pellets only BB's.
The Air Mag C11 (Airsoft) is designed to shoot 6mm Plastic BB's. The C11 BB pistol is designed to shoot .177 Caliber metal BB's.
yes it can shoot slugs
You could shoot at a pigeon with a pistol.
I have seen people shoot accurately at 100 yards or more with a .38 pistol. However, in general, a pistol bullet can travel, on average, about a mile.
Range is dependent on several conditions. The size and weight of the BB or pellet. The power plant in the pistol. C02, Pump, Spring or PCP. The temperature, length and type of barrel, and finally wind. All of these effect the distance an air pistol can shoot. It is different for each model.