SK Biathlon Sport .22 LR 40-Grain Ammo, 50-Round Box

SK Biathlon Sport .22 LR rimfire ammunition (brand part no. 420113) loads a 40-grain lead round nose bullet at 1106 fps, developed with input from competitive biathletes who demand consistent performance in brutal cold. SK formulates this round with a special lubricant built to keep functioning smooth in sub-freezing temperatures, where ordinary rimfire ammunition can bog down or misfire. That cold-weather engineering pairs with careful velocity tuning for stable, accurate ballistics even in tough, windy conditions on a biathlon range. The SK headstamp itself signals a level of quality control that competitive rimfire shooters have come to trust over the years. For shooters who need dependable SK .22 LR ammunition through winter conditions, not just fair-weather range days, Biathlon Sport is built for exactly that demand.

Key Specifications

• The caliber is .22 LR, running in any rimfire rifle or pistol chambered for the round.
• The bullet is a 40-grain lead round nose, a non-expanding design built for reliable feeding and accuracy.
• Muzzle velocity reaches 1106 fps, tuned specifically for stable ballistics in cold conditions.
• SK formulates a special cold-weather lubricant, keeping the round functioning smoothly in sub-freezing temperatures.
• The load is developed with competitive biathletes, tuned for consistent accuracy in wind and cold alike.
• The SK headstamp marks a quality-control standard that competitive rimfire shooters have come to trust.
• Each box holds 50 rounds, enough for a solid winter practice session.

Frequently Asked Questions

Is this ammunition designed for cold weather? Yes, it uses a special lubricant formulated to keep functioning smoothly in sub-freezing biathlon conditions.

Does the 40-grain LRN bullet expand? No, it is a lead round nose target bullet built for reliable feeding and accuracy, not expansion.

Is this ammo only useful for biathlon competition? No, the same cold-weather reliability and accuracy tuning also make it a strong choice for winter plinking and practice.

Buy SK Biathlon Sport .22 LR Ammo

Cold weather exposes weak ammunition fast, and Biathlon Sport is engineered specifically not to be that ammunition when temperatures drop. Whether you are training for competition or just shooting through a hard winter, the cold-tuned lubricant and consistent accuracy hold up. Browse more rimfire ammunition and order from our Lubbock, Texas gun shop for fast shipping to your door.