Help me with choke tube identification. How do I know what kind of choke tube I have?
There are a few ways to determine which choke tube you have. The easiest way is to look at the end of the choke tube. If there is a raised letter or number on the end of the tube, then it is a fixed choke tube. If there is no letter or number on the end of the choke tube, then it is a variable choke tube.
Another way to determine which choke tube you have is by looking at the size of the opening at the end of the choke tube. Fixed choke tubes will have an opening that is either .035″ or .038″. Variable choke tubes will have an opening that ranges in size from .027″ to .032″.
You can also determine the type of choke tube you have by looking at the markings on the barrel of your shotgun. shotguns with fixed choke tubes will have the constriction size (e.g. “Mod” or “Full”) stamped on the barrel near the muzzle. Shotguns with screw-in choke tubes will have markings that indicate which type of tube can be used with the gun (e.g. “Invector” or “Remchoke”).
If you have a Remington shotgun and it doesn’t say on the barrel which chokes tube it is, then you can measure the inside diameter of the barrel at its muzzle. The choke tubes will be sized in inches as follows:
- Improved Cylinder – .690″
- Modified – .725″
- Improved Modified – .760″
- Full – .790″
If you have a Browning Invector, Winchester Winchoke, or Mossberg Accu-Choke shotgun, the choke tube will be marked on the barrel.
A choke tube is a device placed inside the barrel of a shotgun that regulates how much shot is released at any given time. Choke tubes come in a variety of constrictions, which are measured in terms of choke percentage. The higher the choke percentage, the more restricted the shot will be as it leaves the barrel.
There are several ways to determine which choke tube you have. One way is to measure the outside diameter of the barrel and then match it with one of the following diameters: .700″, .715″, .740″, or .765″. Another way is to look at the markings on the choke tube itself. The markings will indicate what percentage of constriction it provides. For example, “Cylinder” means there is no constriction, while “Improved Cylinder” (IC) means the choke provides 40% constriction.
You can also determine the choke percentage by measuring the inside diameter of the barrel at the muzzle end. To do this, you’ll need a bore micrometer or caliper. Once you have the measurement, you can match it up with the following chart:
Barrel Diameter (in.) -Choke Percentage
.745″ – 15%
.750″ – 20%
So, for example, if you have a .740″ barrel, you know that the choke provides 10% constriction.
Choke tubes are made from a variety of materials, including steel, aluminum, and brass. The most common type of choke tube is the steel choke tube. Steel choke tubes are less expensive than other types of choke tubes and are more durable.
If you are unsure of the brand or model of choke tube that you have, there is a very easy way to determine what it is. Simply take the choke tube out of the gun and look at the end. There should be some sort of marking on the end that will identify the make and model of the choke tube. If there is no marking, then you can try to measure the diameter of the choke tube and compare it to a size chart online. Once you have determined what type of choke tube you have, you can then find choke tubes in that specific size at your local sporting goods store or online.
Most choke tubes are identified by a number on the end of the tube. You can also check the choke tube manufacturers’ website to find what choke tube you have. If all else fails, take the choke tube to your nearest gun shop and they will be able to identify it for you.