Frequently Asked Questions

Why are J Dewey cleaning rods male threaded?

Male threading allows for a significantly larger amount of nylon to adhere to the rod due to the heat involved during the coating process. This makes for a longer lasting, more durable cleaning rod. Also, the male threads allow for a stronger connection with the rod attachment. This is particularly important in larger calibers where a heavy jag being supported by a small, male thread can snap off and plug a female cleaning rod. When this happens, it is very difficult to remove the material from the tapped hole and the rod is destroyed. If a jag snaps off in a brush adapter, the problem can be solved for only a few dollars.

Are the male threaded J Dewey rods supplied with the necessary brush adapter?

Yes, all Dewey rods that require a brush adapter are supplied with them along with a pointed, brass jag for pushing patches.

What is the thread pitch on J Dewey cleaning rods?

.17 and .20 caliber, both coated and stainless – 5/40 female
.22 caliber coated – 8/36 male
.22 and .27 caliber & up stainless and brass rods – 8/32 female
.27 & up coated rods, including .35/.50 caliber – 12/28 male
Coated shotgun rods – 5/16 x 27 female
Brass shotgun rods – 12/28 male
Copper eliminator series rods – 8/32 female
22CF rods – 8/32 female
6-HDB rod – 8/32 female


How do I determine what J Dewey rod I have if there is no identifying mark on it?

The easiest way to determine what rod you have is by measuring the outside diameter of the rod. The material diameters are as follows for coated rods:

.17 caliber – .156/.160 inches
.20 caliber – .185/.190 inches
.22 caliber – .205/.210 inches
.27 & up (.30 cal.) – .260/.265 inches
.35 & up (including .50 cal.) – .330/.335 inches

Stainless Steel Rods have a slightly different outside diameter and are as follows:

.17 caliber – .156 inches
.22 caliber – .203 inches
.30 caliber – .250 inches

Our Shotgun Rods have an outer diameter of:

Brass  –  .312 inches
Nylon Coated – .360 inches


What is the benefit of using a coated cleaning rod?

The nylon coating provides a soft, protective surface that is designed to protect the bore during the cleaning process. There will be contact that is unavoidable during cleaning, particularly on longer rifle barrels. The nylon coating ensures that this contact will have no effect on the barrel.

Will the nylon coating pick up abrasives during cleaning?

Any type of cleaning rod will collect debris during cleaning. Be sure to always have a clean rag on hand and wipe the rod down after each pass through the bore. This will eliminate the problem of dragging debris back and forth through the barrel.

Is a rod guide necessary for cleaning?

It is recommended to use a rod guide whenever possible. They are designed to help protect both the firearm and the cleaning rod at the same time. The action area on many rifles contains sharp edges that can scratch a rod if contact is made. A rod guide takes those edges out of the equation while centering the rod down the bore.

What is the working length of J Dewey Rods?

The working length of the rod is just over ½” less then the actual length of the rod. Example: A 36” rod has just about 35 ½” of usable rod.

Will other brands brushes work with your J Dewey Rods?

While we recommend you use our brushes other brands will work as long as they have 8/32 male thread end and you have our adapters.

Why do you recommend a .20 caliber cleaning rod for the .22 rimfire?

.22 rimfire barrels are known for being very tight compared to center fire bores. In many instances our .22 caliber coated rods will work in rimfire barrels but there are barrels in which they will not. CZ bores are notorious for being extremely tight. We have determined that using either a .17 or .20 caliber coated rod in .22 rimfire barrels provides extra clearance and takes the guess work out of whether or not a .22 rod will be too large to pass comfortably through the barrel.

How do I determine if I need a 10″ or 13″(scoped) Adjustable Bolt Action Rod Guide?

The easiest way to determine which guide is necessary is to take a tape measure to the rifle. Measure from the back of the chamber straight out towards the stock. If at the 10″ point you are clear of the scope, the 10″ guide will work fine. If you are still under the scope at the 10″ point, you will want to select the 13″ rod guide.