$19.99
25 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
The Sig Sauer Supersonic CTT rounds sit at a sweet spot in the .300 AAC Blackout spectrum. At 125 grains, you get a lighter projectile that runs supersonic and delivers more velocity than heavier loads while still packing enough energy to matter at realistic ranges. These rounds deliver 2,145 fps from a 16-inch test barrel, which translates to flatter trajectories and stronger impact energy compared to heavier subsonic options. That balance makes them versatile for anyone running an AR in .300 Blackout, whether you're doing precision target work, hunting applications, or running suppressed.
What sets Sig Sauer apart here is the attention to how these rounds are actually made. The CTT projectiles are manufactured to maintain consistent bullet weight, and the ammunition is precision-loaded with state-of-the-art electromechanical monitoring to ensure geometric conformity round to round. That translates to minimal velocity variation from your chronograph, which is crucial if you're trying to dial in accurate holdovers or load data. The brass casings are selected for consistent metallurgy, and Sig pairs them with premium primers to promote reliable ignition.
The 125-grain Closed Tip Target projectile is specifically designed for superior accuracy and minimal dispersion when running suppressed. If you're adding a can to your rifle, these rounds will give you tight shot groups without the velocity degradation that worries some shooters. The lighter weight of the projectile keeps energy up compared to standard subsonic 220-grain loads, so you're not sacrificing downrange performance for hearing protection. For short-barrel rifle setups or AR pistols, this ammunition works without any adjustments to your system.
Each box contains 20 rounds of quality ammunition manufactured in the USA and loaded to Sig Sauer's performance standards. The rounds ship in a protective cardboard box and are ready to function in any .300 Blackout rifle with standard magazines and bolts.
Yes, the 125-grain supersonic CTT loads work reliably in short-barrel rifles (SBRs) and AR pistol platforms without any parts changes. The cartridge uses standard AR-15 bolts and magazines, and the lighter projectile weight maintains good performance even from shorter barrels. Muzzle velocity will be lower than from a 16-inch barrel, but these rounds are designed to perform across different barrel lengths.
Yes, this ammunition is optimized for suppressed shooting. The 125-grain CTT projectile is specifically designed for superior accuracy and minimal dispersion when running a suppressor. While these rounds are supersonic (they break the sound barrier), the consistent manufacturing and projectile design make them excellent for suppressed applications where accuracy matters.
The 125-grain supersonic load delivers significantly higher velocity and flatter trajectories, making it better for longer-range accuracy and hunting applications. The 220-grain subsonic rounds are optimized for maximum sound reduction when suppressed. Choose 125-grain for better velocity and energy retention downrange; choose 220-grain if your priority is hearing protection and you're shooting at closer ranges.
Sig Sauer uses precision electromechanical monitoring during loading to ensure geometric conformity and minimize velocity variation round to round. They also select brass casings for consistent metallurgy and use premium primers. This attention to consistency means tighter groups and more predictable ballistics, which is especially important if you're working with load data or trying to dial in accurate aim points.
| UPC | 798681726592 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | C300B1-20 |
| Shipping Weight | 0.7 |
You must be logged in to post a review.
Reviews
There are no reviews yet.