There really is not a way to determine the exact date the weapon was made if there is not a serial number. However, this particular shotgun was created between 1958-1968, and is worth up to $700.
A barrel with a full choke.
System of changable shotgun choke tubes made by Mossberg. Accu Choke is their brand name. A shotgun choke is a means of reducing the bore size at the muzzle of a shotgun, to produce shot patterns that spread to a greater or lesser degree.
Yes- that is what the poly-choke is for.
Cylinder bore- no choke at all.
Slugs will shoot safely through any choke but Improved cylinder or full cylinder should work.
Yes: A Remington 870 shotgun with a modified choke will shoot any commercial shotgun slug.
A pattern of a shotgun is determined by the choke at the factory. Some models have a variable choke that makes the user able to change the pattern.
A shotgun barrel with a cylinder bore choke.
Check the chambers.
They came in various barrel lengths and choke combinations. If it is not marked on the side of the barrel, you will have to pattern the shotgun to determine the choke
To focus the pattern of shot.
A poly choke is an aftermarket choke. The choke twists to different settings. It should have marks to determine settings around the collar of the choke
The Choke of a shotgun is the amount of barrel restriction at the muzzle end which affects the shot pattern. A full choke will keep the spray pattern of the pellets closer together farther out than if the barrel was not restricted at the muzzle. If there is no restriction at the muzzle, the choke is said to be cylinder choke or cylinder bore.
Depends on the load and what the maker of the choke/shotgun say.
# They relate to choke type, i.e., full, modified....
Unscrew the current choke and screw in the required choke. Making sure to clean the threads before hand.
Either a full choke,or extra full choke shotgun barrel.
For the Stoeger side-by-side shotgun, your best bet would be to use any of the standard Winchester choke tubes. They should fit well for you shotgun.
Amount of muzzle constriction
It affects the spread of the shot column
depends on the game you are hunting