Either a full choke,or extra full choke shotgun barrel.
A savage model 69RXL Series E is a Law Enforcement Riot Gun with an 18" barrel and an open choke for use with #00 Buck Shot.
Is it a screw in choke?
you do not operate choke chokes have different settings for different shot spread and pattern you can change this if the gun has changable chokes if changable the choke screws off and you screw different choke on Yes you do operate this choke, I own one.! It has markings on side. Its what is called a poly choke You can crank it closed for Full choke or twist it open Hope this helps
Yes, you can fire buck thru any type choke. However this does not mean it will work better, as smaller shots do. It is very easy to over-choke buckshot. Most smaller shot does not have as much of a problem as with 00 buck. As the shot goes through the choke "if too tight" the shot smashes into each other and the barrel and deforms the round shot, with flat edges. This can give you a "card" reaction. If you flip a card through the air you will see it doesn't fly straight but flips all over. This is what happens to over-chocked 00 to a lesser extent. Some chokes are even dangerous with 00 buck. Take a 90% Turkey choke. This could blow the end of your barrel off. Talk to every manufacture out there and they will tell you modified choke is recommended for 00. With smaller buck you may be able to tighten up a bit.. but you will not get a better pattern. At 50 yards on a modified choke with 00 you will get 1 or 2 pellets. Smaller shot will grant more.
No.
Unless the manufacturer specifically says you can't, call them first.
All guns should have the information stamped onto the barrel. Most of the time it is near the action. Look on the barrel of your shot gun and it should tell you the make, model, caliber (or in your case with a shot gun) the gauge, for shot guns the size of shell the gun takes, and finally the choke the shot gun has. If it is a screw on choke it should saw on it.
The cylinder type thing with vent holes at the end of a Model 20 12 gauge is likely the barrel choke. Chokes help control the spread of shot pellets, with cylinder chokes providing the least constriction, resulting in a wide shot pattern suitable for short-range shooting. The vent holes are likely for reducing recoil and improving heat dissipation during extended shooting sessions.
Full choke for all buck shot.
You would use a full,or extra full choke if using 00buck for hunting purposes.If for self protection thats up to you.
Not recommended.