The SK Standard Plus .22 LR 40-Grain Lead Round Nose (LRN) Factory Brass 50-round box is specialized rimfire target ammunition engineered explicitly for smallbore marksmanship training, entry-level silhouette competitions, benchrest practice, and sub-MOA 50-yard precision shooting. Inconsistent bulk rimfire ammunition often suffers from erratic velocity spreads, primer misfires, and transonic shockwave turbulence that degrades downrange shot groups. SK Ammunition resolves these precision and feeding limitations by pairing a 40-grain solid lead round-nose projectile with a subsonic 1,073 FPS muzzle velocity and 102 ft-lbs of muzzle energy, delivering flat 50-yard flight paths, low felt recoil, and match-grade shot consistency.
The primary performance advantage centers on the 40-grain Lead Round Nose bullet architecture and SK's specialized wax-based surface lubricant. This protective coating minimizes lead buildup inside the barrel rifling, reduces chamber friction, and preserves bullet shape for a uniform exit from the barrel. Calibrated at 1,073 FPS, the bullet stays well below the sound barrier, eliminating destabilizing transonic shockwaves and maintaining half-inch group capability at 50 yards. The smooth nose profile glides up feed ramps to ensure positive chambering in bolt-action match rifles, semi-automatic carbines, and target handguns.
Manufactured in Schönebeck, Germany, by SK Ammunition—a division of the renowned Lapua and Nammo Group—these cartridges are built under rigorous European manufacturing controls. Assembled with clean-burning propellants and highly sensitive rimfire priming compounds, SK Standard Plus undergoes strict lot-to-lot electronic quality audits to guarantee dependable rim ignition, steady chamber pressures, and long-term shelf stability.
Key Benefits
- Subsonic 1,073 FPS Muzzle Velocity: Prevents transonic shockwave turbulence to maintain sub-MOA precision at 50 yards.
- Proprietary Wax Surface Lubricant: Reduces barrel lead fouling, friction, and chambering resistance during extended range sessions.
- Lapua/Nammo Group Quality Control: Built in Germany under strict electronic audits for lot-to-lot velocity uniformity.
- Versatile Platform Compatibility: Smooth LRN profile ensures clean feeding across bolt-action rifles, semi-autos, and target pistols.
Technical Specification
- Caliber: .22 Long Rifle (.22 LR)
- Bullet Type/Weight: Match Lead Round Nose Solid (LRN) | 40 Grain
- Ballistics: 1,073 FPS Muzzle Velocity | 102 ft-lbs Muzzle Energy | 0.172 G1 BC
- Coating/Casing: Specialized Wax Lubricant Coating | Precision Rimfire Brass
- Logistics: 50 Rounds Per Box | SK Standard Plus Series
- Dimensions: Standard .22 LR SAAMI / CIP Geometry | Manufacturer: SK Ammunition (Schönebeck, Germany)
- Application: Smallbore Target Training, Silhouette Competitions, Benchrest Practice, 50-Yard Precision
- Standards: CIP / SAAMI Compliant | ISO-Grade Competition Manufacturing
When honing your smallbore marksmanship or competing in local rimfire matches, having ammunition engineered for subsonic stability and consistent ignition is essential to driving down group sizes. Dial in match-grade performance for your .22 LR platform with SK Standard Plus 40gr LRN target ammunition—backed by trusted service and available now at SMKW.
