HSM Match .300 Blackout 220 gr Sierra MatchKing BTHP – 20 Rounds per Box (300BLK4N)
For shooters who demand maximum precision from their .300 Blackout platform, the HSM Match .300 Blackout 220 gr Sierra MatchKing BTHP (300BLK4N, UPC 837306006784) delivers consistency, accuracy, and premium performance shot after shot. Loaded with the legendary 220-grain Sierra MatchKing Boat Tail Hollow Point (BTHP) projectile, this match-grade ammunition is engineered for serious target shooters, competitors, and enthusiasts who want to get the most out of their suppressed or unsuppressed .300 BLK rifles.
Each box contains 20 carefully loaded cartridges, and with 25 boxes per case, this load is perfect for shooters who value repeatable accuracy, clean performance, and tight groups at realistic .300 Blackout distances.
Key Features – HSM Match 300 Blackout 220 gr SMK BTHP
Caliber: .300 AAC Blackout
Bullet Weight: 220 grains
Bullet Type: Sierra MatchKing BTHP (Boat Tail Hollow Point)
Intended Use: Match / target / precision shooting
Rounds per Box: 20
Boxes per Case: 25
Manufacturer: HSM (Hunting Shack Munitions)
Product Code: 300BLK4N
UPC: 837306006784
Sierra MatchKing 220 gr BTHP – Proven Match-Grade Bullet
At the heart of this load is the Sierra MatchKing 220 gr Boat Tail Hollow Point—a world-renowned bullet known for:
Exceptional consistency and uniformity in weight, jacket thickness, and ballistic performance.
Boat tail design that enhances downrange stability and helps maintain velocity and accuracy at extended distances.
A hollow point match-style profile, optimized not for expansion, but for precision, reliable accuracy, and aerodynamic efficiency.
When paired with carefully selected components and meticulous loading practices, this bullet helps HSM Match .300 Blackout deliver tight, repeatable groups from quality rifles.
Match-Grade .300 Blackout – Built for Accuracy & Consistency
The HSM Match 300BLK4N load is tailored for shooters who value precision over volume:
Ideal for zeroing high-quality optics, fine-tuning rifles, and testing the true accuracy potential of your .300 Blackout build.
Great for benchrest shooting, prone work, and formal or informal precision rifle training.
Consistent powder charges, brass, and bullets support predictable velocities and point-of-impact.
When you’re refining your skills or dialing in a rifle, this is the kind of ammunition that lets your technique and equipment shine.
Excellent Choice for Suppressed .300 Blackout Setups
With its heavy 220 gr projectile, this HSM Match load is a favorite pairing for suppressed .300 Blackout rifles (always confirm velocity and cycling in your specific setup):
Heavy bullets are often associated with subsonic applications, making this load an attractive option for shooters using sound suppressors (where legal).
The combination of high bullet weight and careful match loading can deliver smooth recoil and excellent downrange stability.
Helps maximize the advantages of .300 Blackout in short-barreled rifles (SBRs) and AR-15 platforms, especially when optimized for quiet, controlled precision shooting.
Always verify your specific rifle, barrel length, and gas system for optimal function with heavy-bullet .300 BLK loads.
Premium Components – Built with Care by HSM
HSM (Hunting Shack Munitions) is known for producing high-quality, specialty ammunition, and this Match series load reflects that commitment:
Carefully selected brass for reliable chambering and extraction.
Match-grade primers and powder formulated for consistent ignition and clean performance.
Quality control focused on uniformity in every lot, helping to support consistent velocities and shot-to-shot repeatability.
These components work together to deliver ammunition that serious shooters can rely on for precise, paper-punching performance.
Ideal Uses – Where HSM Match .300 Blackout 220 gr SMK Excels
The HSM Match 300BLK4N is perfect for:
Precision target shooting with .300 Blackout rifles and pistols
Optic zeroing and testing, where consistency matters more than anything else
Benchrest and prone shooting for skill development and rifle evaluation
Shooters who want to explore the accuracy potential of heavy-bullet .300 Blackout loads, including suppressed configurations (where legal)
While not designed as a hunting or defense-specific load, this ammo shines in controlled, accuracy-focused environments, such as ranges and competitions that allow .300 BLK.
20 Rounds per Box / 25 Boxes per Case – Perfect for Training & Stocking Up
With 20 rounds per box, HSM Match 300BLK4N is packaged for:
Focused range sessions, where you want quality over quantity.
Recording results and tracking performance with specific lot numbers and rifle setups.
For high-volume precision shooters or clubs, the 25-box case (500 rounds total) is ideal for:
Buying by the case is a smart way to maintain consistency and convenience in your .300 Blackout training routine.
Why Choose HSM Match 300BLK4N?
Pick HSM Match .300 Blackout 220 gr Sierra MatchKing BTHP if you’re looking for:
A premium, heavy-bullet .300 BLK load built around the legendary Sierra MatchKing.
Ammunition designed for precision and consistency rather than just general plinking.
A great match with suppressed and precision .300 Blackout platforms.
Ammo from a manufacturer with a strong reputation for match and specialty loads.
This is a top choice for shooters who understand that ammunition quality is just as important as the rifle or optic when chasing tighter groups.
Product Summary – HSM Match 300BLK4N
Caliber: .300 AAC Blackout
Bullet Weight: 220 gr
Bullet Type: Sierra MatchKing BTHP
Use: Match / precision target
Rounds per Box: 20
Boxes per Case: 25
Manufacturer: HSM – Hunting Shack Munitions
Product Code: 300BLK4N
UPC: 837306006784
If you’re ready to explore what your .300 Blackout rifle can really do in terms of precision, the HSM Match 300 Blackout 220 gr Sierra MatchKing BTHP (300BLK4N) is an outstanding choice—delivering match-grade consistency, heavy-bullet stability, and serious accuracy potential for dedicated shooters.
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