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357 Sig Overview

The 357 Sig cartridge was developed in 1994 for NATO pistol use, aiming to duplicate .357 Magnum performance in a semi-automatic pistol. Its design focuses on high velocity and flat trajectory for reliable stopping power. Today, it remains popular among law enforcement and self-defense enthusiasts seeking enhanced ballistic performance.

Why 357 Sig Is a Top Choice

High velocity with effective expansion
Flat trajectory for improved accuracy
Commonly chambered in duty pistols
Good penetration in defensive loads
Reliable semi-auto feeding

Key Variants

357 Sig FMJ

Full metal jacket rounds for training and target practice with reliable feeding.

357 Sig JHP

Jacketed hollow point rounds intended for self-defense with controlled expansion.

Competitor Comparison

Feature	357 Sig	9mm Luger	.40 S&W
MSRP	$1.00–$1.50/round	$0.30–$0.60/round	$0.40–$0.70/round
Capacity/Size	Typically 12 rounds in duty pistols	15+ rounds standard	10–13 rounds typical
Weight	Slightly heavier recoil impulse	Lower recoil, lighter weight	Moderate recoil and weight
Optics-Ready	Available on select pistols	Widely available	Available on select models
Trigger Type	Varies by pistol (DAO, striker-fired)	Mostly striker-fired	Varies (DA/SA, striker-fired)
Notable Pro	Superior ballistic performance	Low cost, wide ammo availability	Balanced power and capacity
Notable Con	More expensive ammo	Less stopping power compared to .357 Sig	Heavier recoil than 9mm

Best Use Cases

Law enforcement duty use
Self-defense handgun platform
Range practice with ballistic fidelity
Concealed carry for ballistic advantage
Firearms collection for semi-auto enthusiasts

FAQs

Can I use standard 9mm magazines for 357 Sig?

No. The 357 Sig cartridge has different dimensions requiring specific magazines designed for its case and pressure.

What is the typical velocity of 357 Sig rounds?

Factory 357 Sig rounds typically achieve velocities between 1,350 and 1,450 feet per second, offering flatter trajectories than 9mm.

How does 357 Sig perform in self-defense?

It offers effective expansion and penetration, making it suitable for defensive use, supported by law enforcement adoption.

357 SIG for Sale