The Remington Thunderbolt .22 LR 40gr lead round nose load (Remington part no. 21238) is a box of 50 rounds built for target shooting, plinking and small-game use. Remington describes the Thunderbolt as a classic for dependable .22 LR performance, with a 40-grain lead round nose bullet leaving the muzzle at 1255 fps. The company says its updated rimfire technology brings tighter tolerances and revamped primer mixes for greater consistency. It is a sensible box to keep on hand for the range, a backyard plinking session or a small-game outing.

Key Specifications

• The chambering is .22 LR, the most widely used rimfire cartridge for practice and small game.
• Bullet weight is 40 grains, the standard weight for this Thunderbolt load.
• The bullet is a lead round nose, which Remington calls ideal for target shooting and plinking.
• Muzzle velocity is 1255 fps, the figure Remington publishes for this load.
• Muzzle energy is 140 ft-lbs, falling to 74 ft-lbs at 150 yards.
• The ballistic coefficient is .116, a useful figure for estimating drop and wind drift.
• Velocity at 100 yards is 988 fps, which shows how the round nose bullet sheds speed.
• Wind drift at 100 yards is 6.1 inches in a 10 mph crosswind, per Remington, so wind matters at longer distances.
• Remington lists the intended usage as small game, alongside target shooting and plinking.
• The package quantity is 50 rounds, a standard rimfire box.

Frequently Asked Questions

What is the Thunderbolt .22 LR load designed for? Remington describes it as a lead round nose load for target shooting, plinking and small-game use.

What changed in the updated Thunderbolt? Remington says tighter tolerances, revamped primer mixes and its current technology give greater consistency and lower chamber pressures for the same muzzle velocity.

How many rounds are in the box? This listing is the 50-round box.

Buy the Remington Thunderbolt .22 LR 40gr Lead Round Nose Ammo, 50 Rounds

A box of dependable .22 LR is the backbone of any range bag, and a 50-round count makes it easy to stock up for a few sessions. Order from our Lubbock, Texas gun shop and browse more rimfire ammunition for fast, insured shipping to your door.