Dan Wesson Arms Monson Mod. 40 SUPERMAG 8” .357 Maximum Revolver
SOLD FOR: $1,136.00
LSB#: WY250210SM034
Make: Dan Wesson
Model: 40 SuperMag
Serial Number: E001525
Year of Manufacture: Released late 1983 Discontinued early 2000s
Caliber: 357 SUPERMAG, aka 357 Maximum, aka 357 Remington Maximum, aka 357 Max.
Action Type: Double Action Single Action Revolver with Swing Out Fluted Cylinder.
Markings: The right side of the frame is marked “DAN WESSON ARMS / MONSON, MASS. U.S.A. / E001525”. The right side of the underlug is marked “DAN WESSON ARMS / .357 MAXIMUM CTG”. The left side of the barrel shroud is marked “SuperMag”. The inside of the crane cut is marked “40”.
Barrel Length: 8” Vent Rib barrel.
Sights / Optics: The front sight is a black blade with red insert front sight . The rear sight is a smooth blacked out adjustable “target” style rear sight.
Stock Configuration & Condition: The grip is a one piece smooth wood grip with Dan Wesson Arms Medallions on each side. The grip shows only very minor storage wear with no notable marks. There are no chips or cracks. Overall the grip is in about Like New condition.
Type of Finish: Blued
Finish Originality: Original
Bore Condition: This revolver includes two barrels. The extra barrel appears to be unfired and new in box. The installed barrel appears to have been fired but not many times. The cylinder looks like only three of the chambers have been fired. The grooves have some light fouling present. The muzzle is clean. The forcing cone has some visible carbon as does the inside of the top strap. In this writer’s opinion the bore rates 9.9/10.
Overall Condition: The revolver retains about 99% of its metal finish. The frame has begun to turn plum. There are some very light scattered hairline scratches in the finish. The bottom rear edge of the trigger guard has some rub marks in the finish. The markings are clear and the screw heads are sharp. There is a very thin turn line on the cylinder. The pins are un-marred. Overall this revolver is in Excellent to Like New condition.
Mechanics: The action functions correctly. There is light side to side play on each cylinder while in lock up. We did not fire this handgun. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.
Box, Paperwork & Accessories: This revolver includes extra barrel, instruction booklet, Dan Wesson Tool and gauge, paperwork and styrofoam box with sleeve.
Our Assessment: The Dan Wesson Model 40 in .357 SuperMag is a purpose-built revolver designed for long-range accuracy and silhouette shooting. Introduced in late 1983, it was developed alongside Elgin Gates to fire the .357 SuperMag cartridge, an extended version of the .357 Magnum that delivers higher velocities with less pressure than other magnum calibers. This cartridge was designed to improve performance in handgun metallic silhouette shooting, offering flatter trajectories and superior energy retention at long distances.
This particular Model 40 features an 8″ vent rib barrel, a signature of Dan Wesson revolvers, known for their interchangeable barrel system, which allows shooters to swap barrels for different lengths and configurations. The revolver is blued, with a solid wood grip for improved handling and a classic aesthetic. Produced between 1983 and the early 2000s, the Model 40 remains highly sought after by collectors and silhouette shooters, prized for its superb accuracy, modularity, and powerful cartridge design.
Due to the extreme power of the .357 SuperMag, prolonged use could cause flame cutting on the top strap and forcing cone erosion. To mitigate this, Dan Wesson shipped the Model 40 with an extra barrel, ensuring long-term durability. This practical solution allowed shooters to replace worn barrels instead of discarding the entire revolver, making it a well-engineered firearm built for sustained use in high-performance applications. Please see our high quality photos via the link and best of luck with your bidding.-R.L.
