Pellet · .22 cal · 18gr · Domed (heavy)
Air Arms Diabolo Field Heavy .22 18gr
The premium .22 field-target pellet — JSB-made for Air Arms with tighter quality control, optimized for higher-power PCPs and long-range accuracy.
Image credit: Airgun Archery Fun
Quick take
The field-target shooter's .22 pellet. Made in Czechia by JSB but to Air Arms' tighter quality control spec — the same dies, the same alloy, but a stricter QC reject rate. 100% positive on 32 orders. At 18 grains it's heavier than the standard 15.89gr Jumbo — designed for .22 PCPs making 25-30 ft-lbs where the extra weight stabilizes better and the long-range performance shines.
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Specifications
Key specs
| Caliber | .22 (5.52mm) |
| Weight | 18 grains (heavy) |
| Head diameter | 5.52mm |
| Design | Round nose (domed) — long-range optimized |
| Count per tin | 250 |
| Brand / origin | Air Arms — made by JSB in Czech Republic |
| Lead alloy | JSB proprietary alloy, Air Arms QC |
| Buyer rating | 100% positive on 32 orders |
| Stock | Out of stock at time of writing |
The Hunt & Live take
Why this pellet earns the pick
Air Arms doesn’t make pellets — JSB does. What Air Arms does is buy JSB output at a tighter QC spec. The dies are the same, the lead alloy is the same, the manufacturing line is the same — but Air Arms pays for a higher reject rate on weight and dimensional variance. The result is a pellet that’s measurably more consistent tin-to-tin than standard JSB, at a premium price.
For most shooters the difference doesn’t matter — a JSB Jumbo 15.89gr is already incredibly consistent. But for field-target competitors who are shooting groups under 1 inch at 55 yards, the extra QC matters. The Air Arms Diabolo Field is the upgrade pellet when you’ve tuned everything else and you’re trying to squeeze out the last 5% of accuracy.
The 18gr weight is deliberately heavier than the 15.89gr standard. It’s designed for the higher-power .22 PCP class (25-32 ft-lbs) where the extra mass improves stability, retains energy at distance, and bucks wind better than a lighter pellet.
What rifles it pairs with
- Snowpeak M60B .22 — pushed to maximum power, the 18gr is the right pellet for the energy budget
- Air Arms TX200 / S510 (the rifles this pellet was designed around) — same brand, same QC philosophy
- Snowpeak Airacuda .22 high reg setting — magnum class .22 PCP, 18gr pellets stabilize well
- Kral Puncher Jumbo Pro .22 — magnum class, well-matched
- Skip for low-power .22 PCPs under 18 ft-lbs — the energy budget can’t drive an 18gr pellet flat enough for accuracy work
When to use it / when not to
Use it for: field-target competition, the most demanding long-range .22 PCP accuracy work, wind-affected outdoor shooting where the heavier pellet drifts less.
Skip it for: typical mid-power .22 PCPs (12-22 ft-lbs) — the standard JSB Jumbo 15.89gr is the better choice for that energy class. Also skip for hunting (use H&N hollow points), and skip for volume plinking (overkill).
Honest trade-offs
Made by JSB. It’s not a secret — both companies acknowledge it. So why pay the Air Arms premium over standard JSB? Only because you want the tighter QC. For most shooters the answer is “I don’t” and the standard JSB Jumbo is the smart pick.
Heavy pellet, more drop. At 50 yards from a 25 ft-lb .22 PCP, the 18gr drops noticeably more than the 15.89gr. You’ll need to adjust your dope.
250-count tin only. Not the 500 you might expect for a target pellet. Air Arms packages at 250 across the line — a small price compromise.
Out of stock cycles. Premium niche pellet; restocks at irregular intervals. Email Wes at the partner if you need it.
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