Depends on the size of the shot, whether the shot is lead, steel or something else, the weight of the load and the gauge of the shell. A lead 1 oz load of #6 birdshot is about 225 pellets.
12 guage shell?
Depends on what size shot, what size shell, what gauge shotgun, how good of shot you are and what choke is being used.. Generally 0-35 yards maybe more maybe less depending on all the above
A 7.5 shot in a 12-gauge shell typically contains around 400 to 450 pellets. The exact number can vary slightly depending on the specific load and manufacturer, but generally, this is the standard range for that size shot. The pellets are relatively small, measuring about 0.095 inches in diameter.
What size shell in legnth are you asking about?
#4 buck shot
the answer would be brand specific, 12 gauge refers to the shell diameter, and 3 inch the length, inside will be divided into propellant and projectile, some may have more propellant leaving less room for projectiles but will be more powerful, some may have less propellant, in favour of more projectile at a decreased range.
That depends on the size of the shot in the 3 inch shotgun shell,and the weight of the shot.
I have a belgium 12 gauge browning shot gun with the serial #B67119. I am trying to find out what type or size choke it has
This is a shotgun with an internal barrel diameter (called the "bore) of approximately .410" which shoots a shell which is about .410" in diameter. It is the only shotgun shell size that uses this convention. A 12 gauge shotgun, for example, does not have a bore of "12". A 20 gauge shotgun has a smaller bore than a 12 gauge and a 10 gauge has a bigger bore than a 12. Gauge size is based on the number of lead balls of the bore diameter which are required to make a pound (16 ounces). 10 balls, 12 balls, or 20 balls.
The number of pellets contained in the shell will depend on the size of the shot.
Air soft shotgun shells are the size of 12 gauge shotgun shells.