Product SKU # :TSQ4309 |  MPN: Q4309  | UPC # :020892211544

Winchester Ammunition 

Winchester USA 357 SIG Ammo 125 Grain Full Metal Jacket - Q4309

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Winchester USA 357 SIG Ammo 125 Grain Full Metal Jacket - Q4309
USDTargetSportsUSA28.70
Was $54.99Sale Price $28.70!
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USDTargetSportsUSA287.00
Was $549.90Sale Price $287.00!
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AVAILABLE : 99+ in stock
AVAILABLE : 16 in stock

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You must be 21 years or older to order ammunition. Ammunition must ship UPS ground. Due to safety considerations and legal/regulatory reasons, Ammunition may not be returned. Please check local laws before ordering. By ordering this Ammunition, you certify you are of legal age and satisfy all federal, state and local legal/regulatory requirements to purchase this Ammunition.

Winchester USA 357 SIG Ammunition 125 Grain Full Metal Jacket - Q4309

The Winchester USA 357 SIG Ammunition, featuring a 125 Grain Full Metal Jacket, is designed to cater to shooting enthusiasts looking for reliable performance during practice and plinking sessions. Manufactured by Winchester Ammunition, this product upholds the brand's legacy of delivering high-quality rounds that offer consistent accuracy and dependability. This particular ammunition is ideal for target shooting, providing shooters with a robust and effective cartridge option.

Features and Specifications:

  • Compatibility: Suitable for firearms chambered in 357 SIG.
  • Performance Metrics: With a muzzle velocity of 1370 fps and a muzzle energy of 521 ft. lbs, it provides consistent shooting performance.
  • Bullet Construction: Full Metal Jacket design ensures reliable feeding and reduces barrel fouling.
  • Application: Perfect for plinking and target shooting, offering excellent accuracy.
  • Packaging: Available in bulk options, making it cost-effective for frequent shooters.

Deep Dive

Overview

The Winchester USA 357 SIG Ammunition is engineered for shooters who require dependable and precise performance at the range. Its design is targeted towards users looking to hone their skills in target shooting and plinking, providing a cost-effective alternative for regular practice. The full metal jacket ensures smooth feeding, which is crucial for maintaining steady target acquisition and shooting rhythm.

History and Development

The 357 SIG cartridge was developed to mimic the power and ballistics of the 357 Magnum in a semi-automatic format. This Winchester offering effectively captures that vision by providing powerful shots with manageable recoil. Winchester's longstanding tradition of manufacturing trusted ammunition continues with this product, maintaining the standard expected by shooters around the world who rely on Winchester’s superior quality and performance.

Common Questions and FAQs

  • What is the casing material for this ammunition?
    This ammunition uses a brass casing, ensuring durability and reloadability.
  • Is this ammunition suitable for self-defense?
    While it is primarily designed for target shooting and practice, it can be used for self-defense in a pinch, though hollow points are typically preferred for defensive purposes.
  • Can this ammunition be used in all 357 SIG handguns?
    Yes, it is compatible with all firearms chambered for the 357 SIG.
  • Is this ammunition lead-free?
    No, this ammunition contains lead and is therefore not lead-free.
  • Does the packaging include bulk options?
    Yes, bulk purchasing options are available, making it ideal for high-volume shooters looking to reduce costs.
  • Does it come with any special features for storage?
    Specific packaging features were not provided, but standard storage advice for keeping ammunition in a cool, dry place applies.

The 'Round Up'

Perfect Fit for:

  • Target Shooting / Plinking

Why It Stands Out:

The Winchester USA 357 SIG 125 Grain Full Metal Jacket ammunition is a fine choice for shooters seeking reliability and precision in their practice sessions. Its high muzzle velocity and energy make it effective, while it's brass casing supports reloadability. Designed primarily for target shooting, this ammunition embodies Winchester's commitment to quality, performance, and shooter confidence. Ensure you meet the age requirement and follow all local laws when ordering, and take advantage of bulk purchase options for added savings.

Field Details
MPNQ4309
UPC020892211544
ManufacturerWinchester
PlatformHandgun
Ammo ApplicationTarget Shooting / Plinking
Ammo TypeFull Metal Jacket
Caliber357 SIG
Grain Weight125
Quantity Per PackageBox of 50 / Case of 500
Test Barrel LengthNot Provided
Muzzle Velocity1370 fps
Muzzle Energy521 ft. lbs
Ballistic Coefficient (G1)Not Provided
Case TypeBrass
Primer TypeBoxer
CorrosiveNo
ReloadableYes
Lead FreeNo
Staked PrimerNot Provided
Country of OriginUSA

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SHIPPING AMMUNITION


Attention Ammunition Buyers You must be 21 years or older to order ammunition. Ammo must ship UPS/FedEx Ground. For safety reasons, we cannot accept returns on ammo. Always, make sure that you use the correct ammunition for your gun. Please check local laws before ordering.


Shipping Estimate Please add the product into your shopping cart to get a shipping estimate
   
Ammo Shipping Zones
Target Sports USA only ships ammo to Contiguous 48 states only. We do not ship ammo to Alaska & Hawaii 
   
Proposition 65 Warning
 This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.p65warnings.ca.gov.

Reviews

54 Customer Review(s)
5 Star
36  (67%)
4 Star
11  (20%)
3 Star
4  (7%)
2 Star
1  (2%)
1 Star
2  (4%)
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Comments and Reviews on Winchester USA 357 SIG Ammo 125 Grain Full Metal Jacket - Q4309
Performancestarstarstarstarstar
Valuestarstarstarstarstar
Qualitystarstarstarstarstar
Great ammo, nice shooting with this round from Winchester USA. Shipped fast from TSUSA!
Reviewed by Jonathan  A
11/2/2025 8:02:00 PM
Comments and Reviews on Winchester USA 357 SIG Ammo 125 Grain Full Metal Jacket - Q4309
Performancestarstarstarstarstar
Valuestarstarstarstarstar
Qualitystarstarstarstarstar
Grabbed a couple boxes to try it out, usually run Federal or Speer. 357 SIG ammo has been obscenely expensive lately though. I don’t use my 357 SIG’s much cause of the CPR.
Reviewed by David  F
10/20/2025 7:00:43 AM
Comments and Reviews on Winchester USA 357 SIG Ammo 125 Grain Full Metal Jacket - Q4309
Performancestarstarstarstarstar
Valuestarstarstarstarstar
Qualitystarstarstarstarstar
Great ammo, no issues with this round from Winchester USA. Thank you TSUSA!
Reviewed by Paul  C
10/8/2025 5:39:16 PM
Comments and Reviews on Winchester USA 357 SIG Ammo 125 Grain Full Metal Jacket - Q4309
Performancestarstarstarstarstar
Valuestarstarstarstarstar
Qualitystarstarstarstarstar
Performed as expected, great shooting with this round from Winchester USA. Fast shipping from Target Sports USA.
Reviewed by Mike  W
8/27/2025 5:05:50 PM
Comments and Reviews on Winchester USA 357 SIG Ammo 125 Grain Full Metal Jacket - Q4309
Performancestarstarstarstarstar
Valuestarstarstarstarstar
Qualitystarstarstarstarstar
Works well, no issues with this round from Winchester USA. Shipped fast from Target Sports USA.
Reviewed by George d  D
8/21/2025 3:01:32 PM

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About Winchester Ammunition

Winchester Ammunition is proudly made in the USA and is one of the most iconic and trusted names in the firearms industry, delivering over 150 years of innovation, reliability, and performance. Known for legendary product lines like Winchester Super-X, Winchester Deer Season XP, and Smith & Wesson, USA Winchester White Box, Winchester offers a full range of handgun, rifle, and shotgun ammunition tailored for hunting, defense, and target shooting. Built with consistent quality and precision engineering, Winchester rounds are favored by professionals and recreational shooters alike. Target Sports USA carries bulk Winchester Ammo with free shipping and great pricing on popular calibers like 9mm Luger ammo, .223 Rem ammo, 12 Gauge ammo, .40 s&w ammo, and 308 Winchester ammo.

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