.338 Spectre, SBR 300 Gr. JHP Sub-Sonic, One Cartridge not a Box

Description

“New Production!”, Mint! Bright! NO Dents! No Scratches, No corrosion! No Junk!
One Cartridge , Not a Box: .338 Spectre factory produced by SBR of the U.S.A. using new brass cases with “SBR 338 SPECTRE” Head Stamp and loaded with a “SUB-SONIC” 300 Grain  elongated MGJHP, ( Match Grade Jacketed Hollow Point) Projectile.

For more versions of this caliber see below.

History of the 338 Spectre cartridge:

In an effort to develop cartridges for forcible entry and other shorter range combat operations; many ideas have come up for a cartridge that will disable a combatant without taking out the neighborhood with an over-powering caliber that works well on the battlefield at more the 100 yards.
The idea was to use a shorter barrel version of the AR-15 platform with many smaller pistol calibers, or smaller rifle calibers loaded to sub-sonic velocities.
There have been a few new calibers designed for this type of duty and the 338 Spectre is one of them, with a 300 grain projectile traveling at below sonic speed.
The .338 Spectre is the brainchild of Mr. Marty ter Weeme of Teppo Jutsu Co LLC.The cartridge has a wide array of applications, including small to medium game hunting, match target, suppressed sniper shooting and forcible entry.Like many new calibers, the .338 Spectre cartridge was developed specifically for the AR-15 family of gas-operated, detachable-box magazine-fed firearms.
The cartridge is intended to fill the gap between traditional pistol caliber cartridges and existing rifle cartridges used in this weapon system.
It shares the same rim size with the new Remington 6.8 x 43mm SPC cartridge, allowing use of OEM bolts in this caliber.

Additional information