JSB 546246-500 Exact Jumbo .22 5.51mm Pellets 500pk

Optimize your .22 rifle’s potential with the JSB Exact Jumbo 5.51mm. Many premium airgun barrels benefit from this slightly larger 5.51mm head size, which grips the rifling more effectively to provide increased spin stability. These pellets are world-renowned for their weight consistency and smooth finish, eliminating the "flyers" that plague lower-quality brands. For the serious hunter or target shooter who wants to squeeze every ounce of performance out of their barrel, the 5.51mm Jumbo is a must-try ammunition. - George
The JSB Exact Jumbo .22 is the firm foundation of JSB's .22 calibre range - not a basic pellet, but a top-quality, highly respected choice among airgun shooters. Carefully engineered for perfect flight characteristics, these pellets offer exceptional long-range performance thanks to their optimised shape, centre of gravity and alignment. Hand-picked during quality control, each tin contains pellets that meet JSB’s exacting standards.
- Weight 1.030 g
- Diameter 5.510 mm
- Quantity 500 pcs
- Muzzle velocity 175 m/s (at 16 J)
- Tested group requirement centres within 16 mm at 45 m
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Outstanding long-distance accuracy , specifically shaped for ideal distribution and alignment, making them the best choice for longer shots.
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Hand-picked quality control , every pellet in the tin is inspected to guarantee consistency.
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Proven performance , tested at 45 m, with five-shot groups required to have centres within 16 mm.
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Consistent velocity , muzzle velocity of 175 m/s when used in an airgun set to 16 J.
- JSB 546246-500 Exact Jumbo .22 5.51mm Pellets 500pk
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When should I use 5.51mm .22 pellets? If your .22 rifle is showing inconsistent groups with standard ammunition, the 5.51mm head size provides a slightly snugger fit that can stabilize the pellet more effectively.
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Does a larger head size increase power? By creating a better seal in the barrel, a 5.51mm pellet can often maximize the air pressure behind it, sometimes resulting in a slight increase in muzzle energy (Ft/Lbs).
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Are JSB Jumbo pellets lead-free? No, these are high-quality soft lead pellets. The soft lead allows the skirt to expand upon firing, perfectly conforming to your rifle's unique rifling.
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What is the best .22 pellet for pest control? The JSB Jumbo 15.89gr is a top-tier hunting pellet because its domed head combines deep penetration with a high impact force for humane dispatch.
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Why do professional shooters prefer JSB? Professionals choose JSB for their reproducible quality. Every batch is designed to perform exactly like the last, which is vital for maintaining a zeroed scope.
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