JSB Exact Heavy .177 | 500 pcs | 10.34 gr

Precision. Power. Superior Wind Resistance.

The JSB Diabolo Exact Heavy is the heavyweight choice for serious .177 caliber shooters who need more than a standard pellet can deliver. At 10.34 grains, this domed pellet offers superior wind resistance and stronger energy retention at longer ranges — making it a standout performer for competitive shooting, field target, and small game hunting where stability and accuracy matter most. Backed by JSB's world-renowned manufacturing consistency and packed 500 per tin, the Exact Heavy is built for shooters who refuse to compromise.

Overview

Where standard .177 pellets begin to lose stability and energy at distance, the Exact Heavy keeps performing. The additional mass gives it a decisive edge in windy conditions and at longer ranges, while JSB's tight manufacturing tolerances ensure consistent head diameter and weight across every pellet in the tin. The domed profile optimizes aerodynamic efficiency, and the 4.52mm head diameter produces a reliable, uniform bore seal for repeatable accuracy shot after shot.

Key Features

• .177 caliber heavyweight domed pellet engineered for precision and consistent long-range performance
• 10.34gr weight delivers superior wind resistance and stronger energy retention at distance
• 4.52mm head diameter for a consistent, uniform bore seal
• Domed profile optimizes aerodynamics for stable, predictable flight
• 500-count tin for extended competition, field target, and hunting sessions
• JSB's industry-leading manufacturing tolerances for shot-to-shot consistency
• Ideal for competitive shooting, field target, and small game hunting
  
  

Performance Advantage

• Heavier grain weight resists wind drift and maintains energy at ranges where standard .177 pellets lose consistency
• Domed shape balances aerodynamic efficiency with reliable energy transfer on impact
• Ballistic coefficient of 0.027 (GA drag model) delivers predictable, stable trajectories at practical airgun ranges
• JSB's tight tolerances minimize fliers and produce tight, consistent groups across the full tin
• Trusted by serious airgunners worldwide for competition, field target, and precision hunting applications
  
  

Specifications