JSB KnockOut Slugs .177 MkII 4.51mm 10.03gr – 500 Pack
S114635
- Bullet-shaped homogeneous lead slug — higher BC and flatter trajectory than conventional diabolo pellets
- Hollow point soft-lead head for reliable deformation and rapid energy transfer on impact
- Calibre: .177 / 4.51mm — weight 10.03 grains (0.650 g)
- Flared rear design aids in-bore stabilisation for consistent downrange accuracy
- Optimised for high-power (FAC) PCP air rifles; not suitable for sub-12 ft/lb guns
- JSB's precision manufacturing delivers tight dimensional tolerances tin to tin
- 500 slugs per pack — a practical volume for regular FAC shooting and pest control sessions
The JSB KnockOut Slugs .177 MkII are homogeneous lead slugs designed specifically for high-powered, FAC-rated PCP air rifles. Unlike conventional diabolo pellets with their waisted skirt, these slugs adopt a bullet-shaped profile that delivers a higher ballistic coefficient, retaining velocity more efficiently over distance and producing a noticeably flatter trajectory. The hollow point head is made from soft lead and deforms reliably on impact, transferring energy quickly — a clear advantage when hunting or controlling pests at longer ranges. The flared rear aids gyroscopic stabilisation in the barrel, contributing to consistent groups downrange. Each slug is manufactured to JSB's tight dimensional tolerances at 4.51mm diameter, ensuring a repeatable fit in the bore. The pack contains 500 slugs at 10.03 grains (0.650 g), making it a practical volume buy for FAC shooters who put rounds through the rifle regularly. Note that these slugs are optimised for high-power airguns and are unlikely to stabilise or perform reliably in sub-12 ft/lb rifles.
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