Ammo Reports Team
| Feature | Detail |
|---|---|
| Primary Use | Recreational shooting, suppressed fire |
| Bullet Type | Full Metal Jacket (FMJ), flat-base |
| Bullet Weight | 200 grains |
| Case Material | Brass |
| Primer Type | Boxer, non-corrosive |
| Packaging | 50 rounds per box |
| Typical Price | $55.99/box · $1.12/round |
| Closest Competitors | Hornady BLACK 300 BLK 208 gr A-MAX Sub, Remington HTP 300 BLK 220 gr OTM Sub, Sig Sauer Elite 300 BLK 205 gr OTM Sub |
Official Specs
| Spec | Value | Source |
|---|---|---|
| Muzzle Velocity (fps) | — | Not published |
| Muzzle Energy (ft-lbs) | — | Not published |
| Bullet Weight | 200 gr | Manufacturer |
| Bullet Type | Full Metal Jacket | Manufacturer |
| BC G1 | — | Not published |
| BC G7 | — | Not published |
| Manufacturer SKU | — | Not published |
| UPC | — | Not published |
| Reloadable | Yes | Brass case, Boxer primer |
Note: Magtech does not publish muzzle velocity or muzzle energy for this load in available product documentation. This is not uncommon for subsonic ammunition marketed primarily toward recreational shooters, but it does limit direct performance comparisons. Velocity and energy figures in the Ballistics Table below are estimated from the established subsonic envelope for 200 gr .300 Blackout projectiles and are clearly labeled as calculated. Community-submitted chronograph data will be incorporated when available.
Ballistics Table
Calculated estimate. Real-world results vary by barrel length, temperature,altitude, and lot. Community submissions will provide measured muzzlevelocity for comparison.
Assumed muzzle velocity: 1,010 fps (representative subsonic ceiling for 200 gr .300 BLK from a 16″ barrel). BC G1 estimated at 0.270 based on comparable 200 gr FMJ projectiles. Zero: 100 yards. Sight height: 1.5″ above bore.
| Yards | Velocity (fps) | Energy (ft-lbs) | Trajectory (in) |
|---|---|---|---|
| 0 | ~1,010 | ~454 | -1.5 |
| 100 | ~921 | ~377 | 0.0 ← zero |
| 200 | ~840 | ~314 | -8.2 |
| 300 | ~766 | ~261 | -30.5 |
| 400 | ~699 | ~217 | -72.4 |
| 500 | ~638 | ~181 | -140.6 |
All values marked ~ are calculated, not manufacturer-published. BC G1 ~0.270 assumed. Results will differ meaningfully with shorter barrels (e.g., 8″–10″ pistol-length platforms), which are common for suppressed .300 Blackout builds and can reduce muzzle velocity by 50–150 fps.
Key takeaway: At subsonic velocities, a 200 gr FMJ sheds energy rapidly beyond 200 yards. The trajectory drop of roughly 8 inches at 200 yards and over 30 inches at 300 yards makes this a close-range load by design — most practical applications fall within 150 yards. The heavy bullet retains meaningful energy at 100 yards for steel targets and recreational use, but the arc demands precise holdover at extended distances. For suppressed shooting, the flat-nosed trajectory is a secondary concern; hearing safety and noise reduction are the primary reasons this weight class exists.
Why This Load Exists
The 300 AAC Blackout cartridge was engineered from the ground up to cycle reliably through AR-15 platforms at both supersonic and subsonic velocities, with suppressor use as a central design requirement. Subsonic loads in the 200–220 gr range occupy the upper end of that spectrum — keeping the bullet below the speed of sound (~1,125 fps at sea level) eliminates the ballistic crack that makes supersonic fire loud even through a suppressor.
Magtech’s 200 gr subsonic FMJ addresses the recreational end of this market. The FMJ construction is not optimized for terminal expansion, which is appropriate for paper and steel target work but disqualifies the load for hunting in most jurisdictions. The 200 gr weight sits slightly lighter than the most common subsonic benchmark (220 gr), which can offer marginally flatter trajectory while remaining reliably subsonic under normal atmospheric conditions. This weight is a practical middle ground between the heaviest subsonic offerings and the supersonic spectrum, and Magtech’s brass-cased, Boxer-primed construction makes it compatible with standard AR-15 bolt carriers and gas systems configured for subsonic cycling.
Best Uses
Good fit:
- Suppressed recreational shooting where noise reduction is the primary goal
- Steel and paper target practice at ranges under 150 yards
- Training and familiarization with suppressed .300 Blackout platforms
- Indoor or urban range environments where over-penetration with expanding bullets is a concern
- Shooters seeking a budget-accessible subsonic load for high-volume range sessions
Not the right tool for:
- Hunting — FMJ bullets do not expand and are prohibited for deer and most medium game in the majority of U.S. states
- Engagements beyond 200 yards, where trajectory drop becomes difficult to manage without a dedicated holdover system
- Self-defense or home defense applications where terminal performance matters
- Platforms with gas systems tuned exclusively for supersonic loads — cycling reliability with subsonic ammunition depends heavily on suppressor use or a properly adjusted gas block
- Competitors or precision shooters requiring published BC and velocity data for ballistic solver input
Reliability Notes
No structured submissions yet.
Based on manufacturer claims and open-source product descriptions, Magtech positions this load as a consistent performer for recreational use. The brand emphasizes quality-controlled assembly using brass cases and non-corrosive Boxer primers — construction details that support reliable feeding and extraction in AR-15 pattern rifles. Magtech’s ammunition manufacturing history in Brazil under CBC (Companhia Brasileira de Cartuchos) gives it a long production track record with military and law enforcement contracts, which informs their quality control standards for commercial loads.
Open-source user observations on subsonic .300 Blackout loads generally note that reliable cycling without a suppressor can be inconsistent across platforms — this is a characteristic of the subsonic pressure curve, not specific to Magtech. A suppressor or an adjustable gas block is typically required for consistent bolt cycling with 200 gr subsonic loads. These notes come from open sources and manufacturer claims, not structured data collected by this database.
Competitors
| Load | Weight | Bullet | BC G1 | Muzzle Velocity | Price/box | Notes |
|---|---|---|---|---|---|---|
| Hornady BLACK 300 BLK 208 gr A-MAX Sub | 208 gr | A-MAX (polymer tip) | 0.648 | 1,050 fps | ~$38–$48 | Higher BC, expanding-capable design; budget alternative |
| Remington HTP 300 BLK 220 gr OTM Sub | 220 gr | Open Tip Match | ~0.270 | 1,010 fps | ~$45–$55 | Heavier bullet, similar velocity envelope |
| Sig Sauer Elite 300 BLK 205 gr OTM Sub | 205 gr | Open Tip Match | — | 1,000 fps | ~$40–$50 | Close weight match; OTM vs FMJ distinction |
| Barnes Vor-TX 300 BLK 190 gr OTM Sub | 190 gr | Open Tip Match | 0.280 | 1,050 fps | ~$55–$70 | Premium alternative; lead-free projectile option available in other Barnes lines |
| Fiocchi 300 BLK 220 gr OTM Sub | 220 gr | Sierra MatchKing OTM | 0.330 | 985 fps | ~$38–$48 | Published BC; budget-friendly with known projectile |
| American Eagle 300 BLK 220 gr OTM Sub | 220 gr | Open Tip Match | — | 1,000 fps | ~$35–$45 | Widely available; Federal-made budget option |
The Hornady BLACK 208 gr A-MAX is frequently cited as the benchmark subsonic .300 Blackout load due to its published BC and consistent performance data. The Fiocchi 220 gr with Sierra MatchKing projectile offers a known BC for ballistic solver use, which the Magtech load cannot currently match due to absent published specs.
Price Reality
- Typical retail range: $50–$60 per 50-round box; case pricing (typically 500 rounds / 10 boxes) generally falls in the $480–$550 range when available
- Per-round cost: approximately $1.12/round at $55.99 MSRP
- The American Eagle 220 gr OTM Sub frequently retails at $0.70–$0.90/round, making it meaningfully cheaper for high-volume practice
- The Hornady BLACK 208 gr A-MAX Sub typically runs $0.76–$0.96/round and adds a published BC and expanding-capable bullet design at a lower or comparable price point
- The Barnes Vor-TX 190 gr Sub commands $1.10–$1.40/round, positioning the Magtech FMJ at roughly equivalent cost to a premium expanding load — a notable consideration when evaluating value
- Fair price benchmark: Given that comparable subsonic loads with published specs and OTM or expanding bullets are available at $0.75–$1.00/round, paying above $1.10/round for an FMJ-only load without published velocity data is difficult to justify outside of supply constraints or specific platform requirements
Prices change. Check the Where to Buy block for current listings.
Where to Buy
Magtech .300 Blackout 200 Gr Subsonic FMJ (Box)
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FAQ
Does the Magtech 200 gr FMJ expand on impact?
No. Full Metal Jacket bullets are designed for full penetration without deformation or expansion. The copper jacket encases the lead core completely, preventing the mushrooming effect that expanding bullets like hollow points or soft points produce. For recreational target shooting on steel or paper this is entirely appropriate, and FMJ construction typically feeds more reliably in semi-automatic platforms than some hollow point designs. However, this makes the load unsuitable for hunting applications where terminal expansion is required by law or by ethical practice in most jurisdictions.
Will this ammunition cycle reliably without a suppressor?
This is one of the most common questions about any subsonic .300 Blackout load, and the honest answer is: it depends on the platform. Subsonic loads generate significantly lower chamber pressure than supersonic loads, which can be insufficient to cycle a standard AR-15 bolt carrier group reliably without a suppressor adding back-pressure. An adjustable gas block set to a more restricted position can help, as can a heavier buffer. Magtech does not publish gas system recommendations for this load. Shooters running this ammunition suppressed on a properly configured rifle should expect consistent cycling; those running it unsuppressed should verify function through testing before relying on it.
How does the 200 gr weight compare to the more common 220 gr subsonic loads?
The 200 gr bullet sits 20 grains lighter than the most common subsonic .300 Blackout benchmark weight. In practical terms, this produces a slightly flatter trajectory at typical engagement distances (under 150 yards) and may generate marginally less recoil, though both differences are minor at subsonic velocities. The 220 gr loads — such as the Remington HTP or Fiocchi/Sierra MatchKing offerings — have a longer track record and more published ballistic data available. The 200 gr weight is a legitimate choice, but buyers should be aware that suppressor tuning and gas system settings optimized for 220 gr loads may need minor adjustment.
Is this load suitable for AR pistol platforms with short barrels?
Short-barreled .300 Blackout pistols (8″–10.5″ barrels) are among the most popular platforms for subsonic use. The shorter barrel will reduce muzzle velocity compared to a 16″ rifle — potentially by 50–150 fps — but since the load is already subsonic at rifle length, this reduction remains within the subsonic envelope under normal conditions. The more significant concern is gas system tuning: pistol-length gas systems on short barrels behave differently than carbine or rifle-length systems, and suppressor use is nearly always required for reliable cycling of subsonic loads on these platforms. Magtech’s brass case and Boxer primer are compatible with standard pistol-length AR builds.
Why would someone choose an FMJ subsonic load over an OTM (Open Tip Match) subsonic load?
The FMJ and OTM designations describe different bullet constructions with different performance characteristics. OTM bullets — like those used in the Hornady BLACK or Fiocchi loads — are manufactured to tighter tolerances and are designed for improved accuracy, with the open tip serving as a manufacturing artifact rather than an expansion mechanism (though some do exhibit limited expansion). FMJ loads like this Magtech offering are generally less expensive to produce and are entirely appropriate for recreational steel and paper shooting where precision at long range is not a priority. The Magtech 200 gr FMJ is a practical, cost-conscious choice for shooters who want to run a suppressed .300 Blackout for fun without the per-round cost of match-grade projectiles.
