Shotguns · Winchester

Winchester SX4

Gas-operated all-rounder · Waterfowl and upland · Clay shooting

ManufacturerWinchester
CategoryShotguns
Caliber12 Gauge
ActionSemi-automatic (gas-operated)
Barrel length26.0 in
Capacity4+1
Weight6.9 lb
Introduced2016

About the Winchester SX4

The SX4 is Winchester's current gas-operated semi-automatic, cycling everything from light target loads through heavy waterfowl shells on one action. The 26-inch barrel balances for general field hunting and clay games alike, the magazine carries four rounds, and interchangeable chokes span cylinder through full constrictions. Weight under seven pounds keeps the gun easy to carry across a marsh or a sporting clays course, and the platform's controls stay simple enough for a shooter stepping up from a pump, whether the day calls for a marsh hunt or a weekend round of clays.

Best ammo for the Winchester SX4

Live picks from Top Ammo Supply — in-stock 12 Gauge ammunition, sorted by price per round. Prices and stock refresh throughout the day.

Buckshot & defensive loads

00 buck and defensive shotshells for 12-gauge home defense.

RIO BUCKSHOT 12GA AMMO 2.75IN 9PLT #1 BUCKSHOT 25RD BOX — product photographRio AmmunitionRIO BUCKSHOT 12GA AMMO 2.75IN 9PLT #1 BUCKSHOT 25RD BOX 250rd$140.39$0.562/rdCLEVER MIRAGE 12 GA Ammo 2 3/4IN 00-BUCKSHOT (1425FPS) 9PLT 25RD BOX — product photographCleverCLEVER MIRAGE 12 GA Ammo 2 3/4IN 00-BUCKSHOT (1425FPS) 9PLT 25RD BOX 500rd$290.52$0.581/rdFiocchi Defense Dynamics 12 gauge 2 3/4 inch 9 pellet buckshot, 25 round boxFiocchiFIOCCHI HOME DEFENSE 12 GUAGE AMMO 9-PELLET #1 BUCKSHOT 25RD BOX 250rd$150.66$0.603/rdRIO BUCKSHOT 12GA AMMO 2.75IN 9PLT #1 BUCKSHOT 25RD BOX — product photographRio AmmunitionRIO BUCKSHOT 12GA AMMO 2.75IN 9PLT #1 BUCKSHOT 25RD BOX 25rd$15.11$0.604/rd

Target & clay loads

Affordable birdshot and target loads for practice and clay sports.

Remington Ammunition 20242 Premier STS 12 Gauge AMMO 2.75" 1 1/8 oz 8 Shot 1100FPS 25RD BOX — product photographRemingtonRemington Ammunition 20242 Premier STS 12 Gauge AMMO 2.75" 1 1/8 oz 8 Shot 1100FPS 25RD BOX 25rd$15.11$0.604/rdHornadyHORNADY CRITICAL DEFENSE 12 GAUGE AMMO 2.75IN 8 PLT 00 BUCKSHOT 10RD BOX 10rd$16.19$1.619/rdWinchesterWinchester Ammo Defender 12 Gauge AMMO 2.75" 1 oz 3 - 150 Grain Pieces 10RD BOX 10rd$20.51$2.051/rdWinchesterWINCHESTER LONG BEARD XR 12GA AMMO 3 1/2IN 1200FPS 2OZ #4 10RD BOX 10rd$26.99$2.699/rd

Slugs

Single-projectile loads for hunting and long-range work.

CleverCLEVER MIRAGE 12 GA Ammo SLUG 2 3/4IN 1OZ 1350FPS 25RD BOX 250rd$178.85$0.715/rdCleverCLEVER MIRAGE 12 GA Ammo SLUG 2 3/4IN 1OZ 1350FPS 25RD BOX 500rd$377.99$0.756/rdCleverCLEVER MIRAGE 12 GA Ammo SLUG 2 3/4IN 1OZ 1350FPS 25RD BOX 25rd$21.59$0.864/rdBrennekeBrenneke Mini Slug 12GA AMMO 2in 1oz 393gr 10rd Box 10rd$14.03$1.403/rd

Full selection: Browse all 12 Gauge ammunition at Top Ammo Supply →
Prefer to compare by type? Shotgun ammo category · Prices shown are from topammosupply.com and may change.

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Specifications are approximate and can vary by variant and production year. Verify with the manufacturer before purchase. Ammunition purchase and shipping restrictions vary by jurisdiction — Top Ammo Supply enforces shipping rules at checkout.