Description
If you've loaded a few boxes of pistol rounds, you already know a bullet is only as good as its consistency, and Speer's 4001 TMJ earns its spot on the loading bench. These are 95-grain, .355-inch diameter projectiles with a round nose profile, built for handloaders feeding .380 ACP or 9mm. They're components only, so you'll be supplying your own brass, powder, and primers, but that's the whole point of rolling your own.
What Sets the Speer 4001 TMJ Apart
The big story here is Speer's Uni-Cor plating process. Instead of using a traditional jacket with a bit of exposed lead at the base, the TMJ wraps the lead core in a seamless copper jacket from nose to heel. That full encapsulation cuts down on fouling and keeps airborne lead to a minimum, which your indoor range buddies will appreciate. Each bullet is also double swaged to keep the heel uniform and diameters consistent, and that uniformity is what shows up as tighter groups on paper.
Loading the 95gr TMJ for .380 and 9mm
Since these measure .355 inches, they drop right into load data for both .380 Auto and 9mm Luger. The 95-grain weight is on the lighter side for 9mm and right in the sweet spot for .380, so plinkers and high-volume practice shooters tend to gravitate toward them. The round nose feeds smoothly through just about any semi-auto, and with no cannelure you've got flexibility to set your own seating depth to match your chamber. Always work up your loads from published data in a trusted manual.
Why Reloaders Keep Reaching for These
Speer has been a trusted name on the bench for decades, and the TMJ line is a big reason why. Target shooters and plinkers lean on these for the kind of batch-to-batch consistency that makes practice sessions predictable. They're clean, accurate, and economical, which is exactly what you want when you're loading in volume and burning through a lot of rounds at the range.
Key Specifications
- Manufacturer: Speer
- Manufacturer Part Number: 4001
- UPC: 076683040015
- Bullet Style: Total Metal Jacket Round Nose (TMJ-RN)
- Bullet Diameter: .355"
- Bullet Weight: 95 Grain
- Caliber: .380 ACP / 9mm (.355")
- Ballistic Coefficient: .131
- Sectional Density: .108
- Overall Length: .440"
- Cannelure: No
- Jacket Material: Copper
- Core Material: Lead
- Application: Target / Plinking
- Quantity: 100 Per Box
What’s Included
- 100 Speer 4001 TMJ 95gr .355" Total Metal Jacket round nose reloading bullets
Frequently Asked Questions
Can I load the Speer 4001 TMJ in both .380 ACP and 9mm?
Yes. These bullets measure .355 inches in diameter, which is the standard projectile size for both .380 Auto and 9mm Luger. The 95-grain weight is a natural fit for .380 and makes a light, fast plinking load in 9mm. Just be sure to use published load data for whichever cartridge you're building.
What's the difference between TMJ and regular FMJ bullets?
A conventional FMJ typically has exposed lead at the base or uses a separate cap to cover it, which can affect consistency. Speer's TMJ uses the Uni-Cor plating process to fully encase the lead core in a seamless copper jacket from nose to heel. That fully enclosed design cuts fouling and reduces airborne lead, which is a nice bonus for indoor range time.
Do the Speer 4001 bullets have a cannelure?
No, these bullets do not have a cannelure. That gives you freedom to set your own seating depth to match your chamber and overall cartridge length. Since there's no crimp groove, a light taper crimp is the usual approach for these pistol rounds.
Are these loaded ammunition or just the bullets?
These are reloading components, meaning just the projectiles with no brass, powder, or primers. You'll supply the rest of the components and assemble the rounds yourself on your press. They're meant for handloaders building their own .380 ACP or 9mm practice ammo.



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