JSB 546236-500 Diabolo Exact .177 4.51mm Pellets 500pk
For shooters seeking surgical precision in tight-bore barrels, the JSB Diabolo Exact 4.51mm is the professional’s choice. These .177 caliber pellets feature a slightly smaller head size to reduce friction, resulting in a cleaner release and consistent muzzle velocity. Perfect for Field Target (FT) and HFT competitions, their 8.44gr weight is meticulously balanced to provide a stable, aerodynamic flight path even in breezy conditions. If your rifle prefers a leaner fit, these 4.51mm rounds will deliver the sub-MOA groupings you demand. - George
The company’s best seller, the JSB Exact Diabolo .177 is currently one of the most popular pellets on the market for good reason. Its weight and profile are optimised for FT (Field Target) air rifles, giving consistently stable flight and exceptional grouping.
This pellet uses a very functional profile common to the Exact series and benefits from a higher weight with an ideal centre of gravity, which together produce stable flying properties and reliable, tight groups. The excellent manufacturing and perfect alignment of each pellet ensure repeatable accuracy shot after shot.
Ideal for competition shooters and serious target practice, the JSB Exact .177 4.51 mm is a go-to choice for anyone wanting consistent performance from their air rifle.
- Weight per pellet 0.547 g
- Diameter 4.510 mm (.177)
- Contents 500 pellets
- Muzzle velocity 240 m/s (when airgun power is set to 16 J)
- JSB Diabolo Exact .177 4.51mm Pellets 500pk
-
Why should I choose 4.51mm over 4.52mm pellets? The 4.51mm head size is specifically engineered for "tight" or match-grade barrels. By reducing friction during the shot, these pellets can improve muzzle velocity consistency and prevent lead fouling in narrower bores.
-
What is the weight of JSB Exact .177 pellets? These pellets weigh 8.44 grains (0.547g), which is considered the ideal middle-weight for balancing a flat trajectory with wind resistance.
-
Are these the best pellets for Field Target (FT) competitions? Yes, JSB Diabolo Exact is the gold standard for FT and HFT. The 4.51mm variant allows competitive shooters to "fine-tune" their setup for surgical accuracy.
-
Can I use these in high-power (FAC) air rifles? Absolutely. While lightweight, the aerodynamic domed design remains stable at higher velocities, making them versatile for both sub-12ft/lb and FAC airguns.
-
How does head size affect air rifle accuracy? Finding the right head size (like 4.51mm) ensures the pellet engages the rifling perfectly without excessive drag, which is the secret to shrinking your shot groups.