The Norma Biathlon Match-22 (MPN: 2414040) is a specialised .22 Long Rifle rimfire cartridge engineered for precision target disciplines and winter biathlon environments. Loaded with a 40-grain (2.6-gram) Lead Round Nose (LRN) projectile, this ammunition is tailored with temperature-stable propellants and specialised bullet lubricants to prevent gumming and maintain uniform ignition in freezing or sub-zero conditions. With a rated subsonic muzzle velocity of 320 m/s and a muzzle energy of 137 Joules, it eliminates transonic turbulence to maintain tight grouping dispersion across standard rimfire competition distances. It is supplied in 50-round packaging compatible with all standard .22 LR bolt-action, straight-pull, and semi-automatic match platforms.

Key Features:

• Cold-Weather Performance: Formulated with specialised lubricants and temperature-stable powder to ensure reliable cycling and ignition in sub-zero winter biathlon conditions.
• Subsonic Velocity Profile: Operates at 320 m/s muzzle velocity ($V_0$) to stay beneath the transonic threshold, avoiding flight destabilisation.
• Match-Grade Ballistics: Features a G1 ballistic coefficient of 0.135, producing factory-rated downrange velocities of 294 m/s at 50 m and 275 m/s at 100 m.
• Minimal Wind Drift: Factory ballistics record 7 mm of wind drift at 50 m and 26 mm at 100 m under standard test conditions.
• Consistent Energy Retention: Delivers 115 Joules of kinetic energy at 50 m and 101 Joules at 100 m.

Technical Specifications:

• Calibre: .22 Long Rifle (.22 LR)
• Manufacturer Part Number (MPN): 2414040
• Bullet Type: Lead Round Nose (LRN)
• Bullet Weight: 40 grains (2.6 g)
• Ballistic Coefficient: 0.135 (G1)
• Muzzle Velocity ($V_0$): 320 m/s (294 m/s at 50 m; 275 m/s at 100 m; 259 m/s at 150 m; 244 m/s at 200 m)
• Muzzle Energy ($E_0$): 137 Joules (115 J at 50 m; 101 J at 100 m; 90 J at 150 m; 79 J at 200 m)
• Box Quantity: 50 rounds
• Firearm Compatibility: Chambered for Category A .22 LR bolt-action, straight-pull, and semi-automatic rifles and target pistols

Who is the Norma Biathlon Match-22 40gr LRN 50 Pack for?

• Competitive Biathlon Athletes — requires specialized cold-weather lubricants and propellants in this .22 LR biathlon match ammunition to ensure reliable cycling and a consistent 320 m/s muzzle velocity in freezing environments.
• 50-Metre Smallbore Precision Target Shooters — benefits from the 0.135 (G1) ballistic coefficient and 40-grain LRN profile of this cartridge to maintain subsonic flight and limit wind drift to 7 mm at 50 metres.
• NRL22 and PRS Rimfire Match Competitors — relies on the predictable 115 Joules of energy and 294 m/s retained velocity at 50 metres from this .22 LR match round for consistent shot-to-shot placement across practical barricade stages.

Less suitable for: Target engagements beyond 100 metres where wind drift exceeds 58 mm and bullet drop increases significantly (where higher-BC match projectiles or dedicated centrefire calibres are better suited), or ethical hunting of larger game beyond close ranges where non-expanding 40-grain solid lead rounds lack the terminal expansion of dedicated high-velocity hollow-point ammunition.