The Hornady Lock-N-Load Cartridge Headspace Gauge Bushing is an essential precision tool for serious reloaders, designed to significantly extend brass life, improve firearm accuracy, and enhance overall reloading safety. This individual bushing allows you to accurately measure critical headspace variations in your cartridge brass, both before and after firing or resizing. By enabling a precise comparison between fire-formed and resized brass, this component is fundamental for achieving optimal cartridge fit and consistent performance, whether you are preparing for hunting, target shooting, or general sporting use.

Using the Hornady Lock-N-Load Headspace Gauge Bushing is straightforward when paired with the Hornady Lock-N-Load Headspace Comparator (sold separately) and a set of calipers. The bushing attaches seamlessly to the comparator, which then mounts to your calipers, enabling you to take precise measurements from the case head to the datum line on the case shoulder. This method provides a reliable way to monitor brass stretch and ensures you are resizing your cases correctly, preventing over-resizing which can lead to premature brass fatigue and potential chambering issues.

Bronco's Outdoors offers a comprehensive range of these individual Hornady Lock-N-Load Headspace Bushings, designed to accommodate most bottleneck cases. This particular bushing, the A .330", is compatible with a variety of popular calibres. For those working with Ackley Improved chambers, the same bushing size as the parent case is utilised, streamlining your reloading process and ensuring consistent results. Always consult the product instructions or a detailed Hornady chart for specific cartridge and bushing size details to ensure correct application and maximum precision.

• A .330"
  • .17 Remington
  • .204 Ruger
  • .221 Remington Fireball
  • .222 Remington
  • .222 Remington Magnum
  • .223 Remington
  • .220 Swift
• B .350"
  • .22 PPC
  • .22-250 Remington
  • 6mm PPC
  • 6mm Bench Rest Remington
  • .250-3000 Savage
  • 7mm Bench Rest Remington
  • .300 Blackout
  • 6.5 Grendel
• C .375"
  • 6mm Remington
  • .257 Roberts
  • .25-06 Remington
  • .270 Winchester
  • 7x57mm Mauser
  • .280 Remington
  • .30-30 Winchester
  • .30-06 Springfield
  • .300 H & H Magnum
  • 7.62x39mm
  • 6.5x55mm
  • 7mm Winchester Short Magnum
  • .30-40 Krag
  • 6.5 Creedmoor
  • 6.5x47 Lapua
• D .400"
  • .223 Winchester Super Short Magnum
  • .243 Winchester
  • .243 Winchester Super Short Magnum
  • .260 Remington
  • .270 Winchester Short Magnum
  • 7mm-08 Remington
  • .300 Savage
  • .308 Winchester
  • .35 Remington
• E .420"
  • 6.5mm-284
  • .284 Winchester
  • 7mm Remington Magnum
  • 7mm Remington Ultra Magnum
  • .300 Winchester Short Magnum
  • .300 Weatherby Magnum
  • .325 Winchester Short Magnum
  • .338 Winchester Magnum
  • .350 Remington Magnum
  • .375 H & H Magnum
  • .264 Winchester Magnum
  • 7mm Remington Short Action Ultra Magnum
  • 7mm Shooting Times Westerner
  • .300 Remington Short Action Ultra Magnum
  • .300 Winchester Magnum
  • .300 Remington Ultra Magnum
  • 8mm Remington Magnum
  • .338 Remington Ultra Magnum
  • .35 Whelen
• F .188"
  • Bushing blank with .188" diameter hole (for custom sizes)
• G .240"
  • .17 Hornet