J4 Jackets 6mm .790 Long (Qty 2,000)

J4 Precision Jackets are the standard for custom bullet makers and precision shooters. These 6mm long jackets deliver ultra-tight Total Indicated Runout (TIR) and are manufactured to exacting tolerances so your projectiles achieve world-class concentricity and repeatable accuracy.

Key Benefits

• Ultra-tight concentricity: Achieve bullets with a TIR commonly specified at +/- .0001" for match-grade performance.
• Consistent wall thickness: Minimal jacket-thickness variation reduces dispersion and tightens vertical at long range.
• Trusted by professionals: J4 Jackets are the preferred jacket for custom makers, competition shooters, and OEMs seeking best-in-class jacket geometry.

Product Details

• Caliber: 6mm
• Jacket length: .790 inches (Long)
• Style: Long jacket
• Quantity: 2,000 jackets
• Intended use: Custom bullet manufacturing — varmint, target, hunting, tactical

Use J4 Jackets when precision and repeatability matter. These jackets are engineered to reduce dispersion and help makers get the most from premium cores and ogive designs.