Cylinder bore- no choke at all.
Cylinder bore- which is no constriction at all.
4 notches = cylinder choke (open), and one notch = full choke (tight)
The most open choke
On a shotgun what choke will open up more improved cylinder or modified?
If it is a stock gun it probably has a open cylinder unless someone has added a choke.
There is a tool known as a choke gauge. It is a tapered length of metal that is placed in the bore, and measures the width of the muzzle. Or- shoot the shotgun, and determine how it patterns, Purpose of a choke is to to open or close a shot pattern- and proof is in what the gun does.
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.
The value of a 1905 model D single barrel choke bored Diamond Arms shotgun is actually dependent upon a number of things. Most importantly the condition of the shotgun.
Being a double barrel has no bearing on what the choke COULD be. While MOST are full/ modified. it could be any, or none. Shotgun ChokeYardageShotgun Choke Restriction Diameter difference between bore and shotgun chokeCylinder< 200Skeet22.5.005 of an inchImproved Cylinder25.010Light Modified30.015Modified32.5.020Improved Modified35.025Light Full37.5.030Full40 or More.035Extra Full40 or More.040
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.