Ruger 10/22 Magnum .17 HMR Custom Single-Shot, 20-inch Bull Barrel, Boyds Thumbhole Stock, 290-Series Receiver
This custom Ruger 10/22 Magnum stands out as a rare, purpose-built .17 HMR conversion on Ruger's steel 10/22 Magnum receiver. It features a 20-inch heavy bull barrel with a recessed crown, an optics-only configuration, and a Boyds laminated right-hand thumbhole target stock. The receiver is a 290-series example that aligns with the 2004 shipment window and uses the unique heavier-bolt design specific to the magnum line.
Converted to .17 HMR using a .17 HMR barrel on a Ruger 10/22 Magnum (.22 WMR) receiver, this rifle is set up as a single-shot for focused precision work. The 10/22 Magnum receiver includes integral Ruger scope-ring bases, and 1-inch Ruger rings are installed. The receiver markings read "RUGER" and "MODEL 10/22 CARBINE .22 WIN. MAG. R.F." and the finish is matte blued/black.
The 20-inch bull barrel is unthreaded, unfluted, and carries a recessed target crown. There are no iron sights, making this an optic-only setup. The free-floated barrel channel in the stock complements the heavy-barrel configuration.
The stock is a Boyds laminated hardwood right-hand thumbhole target design with a rollover cheekpiece and a Boyds-branded rubber buttpad. Length of pull measures 13.75 inches. The cross-bolt safety and semi-automatic blowback platform remain, while the rifle is configured to operate as a single-shot in its current setup.
This build leverages the scarce 10/22 Magnum receiver architecture with its heavier bolt and integral ring bases. Made in the United States, it delivers a clean, practical custom configuration that highlights the .17 HMR conversion on the 10/22 Magnum platform.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Some markings from previous handling and use. No magazine is included. Refer to pictures.
What’s Included
- Scope Rings: Ruger 1-inch scope rings installed on integral receiver bases
- Stock: Boyds laminated thumbhole target stock with rubber buttpad (installed)
- Barrel: Heavy/bull barrel with recessed target crown, unthreaded (installed)
This rifle features a 17 HMR barrel on a 22 Magnum 10/22 receiver.




