Your Cart

  • Your cart is empty


The .458 SOCOM

In the years following the great ammo shortage of 2013, Black Butterfly Ammunition was born. The initial offering was determined to be the gigantic wildcat .458 SOCOM because of how awesome it was. 

This round was first developed by Marty Ter Weeme, founder of Teppo Jutsu, LLC in 2000 and quickly developed a cult like following among big bore shooters and hog hunters due to the power and accuracy it delivered.


“The .458 SOCOM was developed by Marty ter Weeme, founder of Teppo Jutsu LLC in 2000. The impetus was an informal (“beer and barbeque”) discussion with a senior member of the US special operations community regarding the apparent lack of effectiveness of the 5.56 x 45 cartridge in recent conflict. In particular, the reports from members of Task Force Ranger in Mogadishu, Somalia that multiple shots were required to neutralize members of the opposing force led to the request to develop a new cartridge that would deliver far more energy from short barrels at relatively short distances. After the design was completed, Tony Rumore of Tromix Corp in Broken Arrow, OK was contacted to build the first prototype. Based on the favorable reviews, commercial production was started and the initial rifles were produced by Tromix. Currently, several firms offer rifles or upper assemblies in this caliber, including AR-15s, AK-47s, single shot and bolt action rifles.” from: 

The .458 SOCOM Wildcat in action!

This Big Bore round fit with the business philosophy of the Black Butterfly Ammunition founder Nick who wanted to manufacturer a hard hitting ammunition for hunters. During testing, it was quickly discovered that there was not enough dedicated .458 SOCOM projectiles with many of them being retooled .45/70 projectiles. The main problem with these projectiles was that many of them were too blunt which reduced the ability to “hang out” the rounds. During the first year of manufacturing, Black Butterfly Ammunition formed relationships with several nationally known projectile manufacturers to develop exclusive projectiles specifically for the .458 SOCOM like the CTX Migration, Maker Turbo Saw, Cutting Edge Maximus Giganticus and the Hawk D600 Colossus to name a few.

Black Butterfly Ammo was quickly recogonized as a expert in the .458 SOCOM industry and was asked to work with CMMG on the release of their CMMG Anvil. During the release of this rifle, Black Butterfly Ammo was fortunate enough to be reviewed and featured in multiple national magazines and articles including Guns and Ammo, Gun World and American Rifleman Magazine.

In addition, Black Butterfly Ammunition has also been featured in countless industry expert YouTube reviews and videos which can viewed in their entierty on the Black Butterfly Ammunition YouTube Channel. There are also dozens of customer videos and videos made by Nick and his friends just shooting our 458 SOCOM ammo literrally having a blast!

Each round produced by Black Butterfly Ammunition is hand-manufactured and individually inspected by a loading expert, to insure we produce the finest quality ammunition available. This includes visual inspections and appropriate case gauge testing of each round produced. In addition, we randomly sample and shoot our production loads at our onsite range on a regular basis; this way we can ensure it will meet our stringent requirements, and will function properly in your firearm.  Our loading and manufacturing expertise comes from years of hands on manufacturing and production with industry leaders, such as, Colt Manufacturing Company, Kahr Arms, and aerospace and defense giant, Esign-Bickford.

24 results

Show Filters