308 Winchester, 180 Gr Maker Rex (Rapid EXpanding)- SUBSONIC – 20 Rounds

.308 Winchester 180gr Maker REX – Subsonic Precision Ammunition

The Just Cause Solutions .308 Winchester 180gr Maker REX brings the proven performance of Maker's solid copper Rapid EXpanding projectile to the subsonic realm. Running at 990fps from a 20" barrel, this load is purpose-built for suppressed platforms where reduced noise signature and reliable terminal performance are the priority. Whether you're running a bolt gun or a semi-automatic .308 platform, this subsonic load delivers consistent, controlled expansion that hunters and precision shooters demand.

All of our ammunition is pressure tested using a PCB PIEZOTRONICS Conformal Transducer according to Voluntary Industry Performance Standard as set forth by SAAMI.

Technical Specifications

Barrel Length & Velocity Data

The Maker REX Advantage

The Maker REX is a monolithic solid copper projectile engineered for reliable expansion at subsonic velocities — a performance threshold where many traditional expanding bullets fail to perform consistently. Key features include:

• Reliable subsonic expansion – Engineered to expand at velocities where conventional hollow points often fail
• Nearly 100% weight retention – Solid copper construction maintains mass for deep penetration
• CNC-machined precision – Every projectile is machined to exact tolerances for consistent performance
• Lead-free construction – Compliant with lead-free hunting regulations where applicable

Hunting Application

The combination of a high BC (.410 G1), excellent sectional density (.253), and the REX's expanding copper construction makes this load well-suited for medium game at close to moderate ranges in suppressed hunting applications. As with all subsonic hunting ammunition, hunters should limit shots to ranges where velocity and energy are sufficient for reliable terminal performance and a clean, ethical harvest.

It is the hunter's responsibility to adequately test their rifle system at distance prior to hunting wild game!

See It in Action

Frequently Asked Questions

Q: Will this cycle a semi-automatic .308 rifle?
A: Subsonic loads produce less gas pressure than standard loads, and cycling reliability in semi-automatic platforms depends heavily on your gas system configuration. We DO NOT recommend using this ammunition in semi-automatic rifles.

Q: What is the effective hunting range for subsonic .308?
A: Effective ethical hunting range depends on your platform, the game you're pursuing, and field conditions. We recommend hunters evaluate their specific setup and err on the side of closer shots to ensure sufficient energy for reliable terminal performance.

Q: Is this ammunition suppressor-ready?
A: Yes. Subsonic .308 Winchester is an excellent choice for suppressed rifles and produces a significantly reduced sound signature compared to supersonic loads.

Q: What does "Rapid EXpanding" mean?
A: The Maker REX is engineered to initiate reliable expansion even at subsonic velocities, where conventional softpoint or hollow point designs may fail to expand consistently. The monolithic copper construction also ensures the projectile retains the majority of its weight on impact.

Q: How is Just Cause USA's ammunition tested?
A: Every batch we produce is pressure tested using our own PCB PIEZOTRONICS Conformal Transducer according to Voluntary Industry Performance Standard as set forth by SAAMI. This level of in-house testing is uncommon in the industry and reflects our commitment to safety and consistency in every round we release.