The DSR-1 action features a benchrest match-grade, fluted barrel that is quickly interchangeable and is fixed into the receiver by three screws.

The barrel is protected by a ventilated aluminium handguard and is fitted with a muzzle brake (which is very useful when firing full-power, magnum loads).

The Gutman gun magazine Visier published an article in October 2003 edition, regarding their performed test shoots with a DSR-1 to get an indication of its accuracy potential with factory ammunition.

An article on the DSR-1 in the French gun magazine Armes & Tir November 2001 edition corroborates the German Visier results.

The Armes & Tir test shooters used RUAG target cartridges and could shoot 200 x 300 mm (0.69 x 1.03 MOA) groups at 1,000 m distance with a .338 Lapua Magnum chambered DSR-1 rifle.

The 8 inch twist rate of the barrel is especially adapted to stabilize the long heavy projectiles used in subsonic ammunition.