The Hornady Lock-N-Load Headspace Bushing at .420 inch (brand part no. E420) is machined to exacting tolerances for use in the Lock-N-Load Headspace Gauge alongside the Hornady Headspace Comparator. It lets reloaders precisely measure cases while sizing them for a perfect fit in belted-magnum chambers, extending brass life and improving accuracy along the way. This bushing size covers most belted magnum cartridges, including 284 Win, 7mm Rem Mag, 300 Win Mag, 8mm Rem Mag, 338 Win Mag, 375 H&H, 7mm STW, 7mm Ultra Mag, 300 Ultra Mag, 300 WSM, and 338 Ultra. Bullet comparator and calipers are sold separately.

Key Specifications

• Bushing Size this bushing measures .420 inch.
• Belted Magnum Coverage fits belted magnums including 300 Win Mag, 7mm Rem Mag, 338 Win Mag, and 375 H&H.
• Hornady Comparator Compatible designed for use with the Hornady Headspace Comparator and Lock-N-Load Headspace Gauge.
• Extends Brass Life precise headspace measurement helps reloaders avoid over-sizing shoulders and extend case life.
• Shipping Weight this item ships at approximately 0.082 lb as packaged.

Frequently Asked Questions

What cartridges use the .420 inch bushing? It covers most belted magnums, including 300 Win Mag, 7mm Rem Mag, 338 Win Mag, 8mm Rem Mag, and 375 H&H.

Does this bushing include the comparator or calipers? No, the bullet comparator and calipers are sold separately.

Buy the Hornady Lock-N-Load Headspace Bushing, .420 In.

Dial in headspace on your belted magnum brass with the right bushing. Order it from Hornady‘s reloading equipment lineup at Schaefer Defense, shipped fast from our Lubbock, Texas gun shop.