Speer 3993 TMJ 9mm .355 124 Grain Total Metal Jacket Ammo - 100 Rounds

Speer 3993 TMJ 9mm bullets deliver the kind of consistency that reloaders and shooters depend on for target work and plinking. These .355-diameter, 124-grain total metal jacket rounds use Speer's Uni-Cor technology, where molten lead is poured directly into the jacket to create a solid bond. That manufacturing process eliminates air pockets and weak spots that can cause unpredictable performance downrange, giving you confidence in every reload you assemble.

Built for accuracy and reliability, every Speer TMJ bullet is swaged twice during production to maintain uniform heel geometry and consistent diameters. That attention to detail matters when you're sorting brass, weighing powder, and seating primers—you want your bullet component to be as predictable as possible. The total metal jacket design minimizes lead exposure during handling and helps reduce fouling in your firearms, making cleanup easier when you're done at the range.

The 124-grain weight is a natural fit for 9mm handloads, offering a proven balance of velocity and energy for target practice and general shooting. Whether you're refining your loads for match competition or just want to keep shooting affordably, quality bullets make the difference. This 100-round box gives you a solid foundation for a reloading session without committing to bulk quantities upfront.

Key Features

• Uni-Cor construction (molten lead poured directly into jacket) for superior integrity
• Double-swaged for uniform heel and consistent diameter tolerances
• Total metal jacket design reduces lead exposure and firearm fouling
• 124 grains—standard weight for 9mm target and general-purpose loads
• 100-round count per box

Specifications

Caliber	9mm
Bullet Diameter	.355 inch
Weight	124 grains
Type	Total Metal Jacket (TMJ)
Quantity	100 rounds

Frequently Asked Questions

Are these bullets suitable for reloading 9mm ammunition?

Yes. The Speer 3993 is designed as a reloading component—a 124-grain bullet component for handloaders assembling 9mm rounds. Purchase, possession, and use must comply with all applicable federal, state, and local laws.

What does Uni-Cor construction mean?

Uni-Cor is Speer's manufacturing process in which molten lead is poured directly into the bullet jacket, creating a single unified core. This eliminates air gaps and inconsistencies, resulting in more uniform bullet performance and reliability.

Will these bullets fit standard 9mm firearms?

The .355-inch diameter is standard for 9mm handguns. Always verify that your firearm is chambered for 9mm ammunition and consult your manual for safe handling practices.

What's the benefit of the double-swaging process?

Double-swaging ensures that the heel (the rear band where the bullet seats in the case) and the overall diameter are as uniform as possible from bullet to bullet. This consistency helps reduce variables in your handloads and supports more accurate shooting.