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Subsonic & Specialty Ammo   
 • 5.56/.223 Ultra Stealth Match Subsonic
 • 7.62/.308 Thumper Subsonic

 • 7.62/.308 PBS-Precision Bonded Subsonic

 • .300 Winchester Magnum Subsonic
 • .338 Lapua Magnum Subsonic
 • 7.62x39 Jackhammer Subsonic
 • 9mm Tactical Subsonic
 • .40 S&W Subsonic
 • .44 Magnum Subsonic
 • 7.62x39 Tracer

 • 12-ga KlinkMeister

Frangible Ammo
 • 12 ga. Frangible ENTRY Slug

 • 9mm Tactical Frangible
 • .40 S&W Frangible

 • .45 ACP Frangible Reduced Hazard
 • .223/5.56 Frangible

 • .308/7.62 Frangible
 • .300 Winchester Magnum Frangible

Government & Military
 • 40mm CQB
 • 7.62/.308 Limited Penetration
 • 7.62 x 39 Facility Protection Frangible

 • 5.56/.223 Subsonic

 • .50 cal Anti Ricochet
 • 6.5 EBR

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"The Straight Dope" Information and Tools
 • READ ME Proper Use of Subsonic Ammunition
 • Why use Phosphate Removal for Subsonic Ammunition?
 • Instructions on how to use EBR Phosphate Removal

 • Ballistics Calculator
 • Greenhill Formula For Rifling Twists
 • Twist Rate, continued

 • First-Round Pop
 • Subsonics Do Not Like Long Barrels!
 • The Use of Mil-Dots & Subsonic Ammunition
 • 7.62 Thumper vs. 7.62 PBS?
 • Speed of Sound Chart
Use of Subsonic Ammunition
 • Verifying Stability
 • FAQ - Frequently Asked Questions

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7.62 Thumper vs. 7.62 PBS?


These ammunition types are actually intended to comprise a complete system.

The 7.62 Thumper is reasonably priced, and allows the shooter to hone his skills with subsonic rifle ammunition. When it comes time to hunt, out comes the 7.62 PBS. The PBS offers greatly enhanced terminal ballistics and an exterior ballistic path either identical to, or very close to (depending on the platform) the less expensive round.

It’s true that the PBS patented ammunition is not cheap. This is because it utilizes a pure copper jacket as opposed to the gilding metal (copper/zinc alloy) used in most projectile jackets today. The commonly used alloy is actually "tougher" and allows for low-cost production with high-speed impact presses. The pure copper is softer, and would not hold up to this treatment. There is no way to automate the process any further than we already have, so the PBS a very complicated and costly projectile to produce.

The difference in price is justified by significantly better terminal performance. The pure copper jacket contributes to the fact that the PBS will expand reliably at subsonic velocities. If the user needs terminal performance unlike any other subsonic rifle round on the planet, the PBS is the obvious and best answer. It was not designed for casual plinking.

Engel Ballistic Research, Inc.
Phone (512) 360-5327 | Fax (512) 360-2652
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