Sellier & Bellot .300 AAC Blackout ammunition (part no. SB300BLKA) loads a 124-grain full metal jacket bullet built for high-volume practice and competitive shooting through a .300 Blackout platform. Sellier & Bellot is a long-established European ammunition maker known for consistent, reliable brass-cased loads, and this round is well suited to practice, recreational shooting, and action pistol and silhouette-style competitive matches. The 124-grain FMJ is the workhorse bullet weight for the cartridge, giving reliable feeding and consistent function magazine after magazine. This rifle ammunition is a dependable choice for shooters who put volume through a .300 Blackout rifle or pistol.

Key Specifications

• The chambering is .300 AAC Blackout, a versatile cartridge built around the 5.56 case and magazine platform.
• The bullet weighs 124 grains, the standard practice and competition weight for the cartridge.
• The bullet type is full metal jacket, built for reliable feeding at high volume rather than expansion.
• The case material is brass, giving reliable extraction and standard reloading compatibility.
• Each box holds 20 rounds, a practical count for a range session.
• Fifty boxes ship per case (1,000 rounds total), letting shooters buy by the case for the best per-round value.
• Cost runs about $0.95 per round, competitive pricing for a brass-cased .300 Blackout FMJ load.
• Each 20-round box ships at about 0.7 pounds, worth knowing when planning a case order.
• Sellier & Bellot positions this as a practice and competition load, suited to action pistol and silhouette matches.

Frequently Asked Questions

What is this .300 Blackout load best suited for? It’s built for practice, recreational shooting, and competitive matches like action pistol and silhouette, where reliable feeding and consistent function matter most.

Is 124 grains a good all-around .300 Blackout weight? Yes, 124 grains is one of the most common .300 Blackout bullet weights, giving a reliable, versatile baseline for practice ammunition.

Buy Sellier & Bellot .300 Blackout 124gr FMJ

High-volume range days call for ammunition that feeds the same way every time, and this load is built on exactly that kind of consistency. Order from our Lubbock, Texas gun shop and it ships fast to your door.