JSB Exact Diabolo .30 44.75gr

Specifications

Key specs

Why this pellet earns the pick

The .30 caliber PCP world is small but growing — FX in .30, AEA, big-bore Snowpeak, and a handful of high-power custom rifles. Inside that world, JSB Exact Diabolo .30 is the universal accuracy starting point. The brand reputation that’s built up over .177, .22, and .25 cal — consistency, decade-stable dies, predictable behavior — carries straight up to .30 cal.

The 44.75gr weight is the standard mainstream .30 pellet weight — JSB also makes the Hades .30 hollow point at the same weight for hunting. The 44.75gr sits in the energy sweet spot for typical .30 PCPs (60-100 ft-lbs) — heavy enough to retain energy at distance, light enough to push to useful velocities.

Note on naming: the partner stocks 44.75gr, not the 50gr the original spec called for. JSB doesn’t make a 50gr .30 — the heavier options in .30 are slugs (a different category). For pellets in .30 cal at the partner, this 44.75gr is the JSB flagship.

What rifles it pairs with

• AEA Challenger Nova .30 — purpose-built .30 hunting PCP, JSB 44.75gr is the right pellet
• FX Maverick .30 — same answer
• Snowpeak M60B in .30 cal — high-power configuration, well-matched
• Any factory .30 cal PCP making 60-100 ft-lbs — start here

For .30 PCPs making 100+ ft-lbs, you start crossing into slug territory — at those power levels the slug accuracy advantage starts to outweigh the pellet stability advantage.

When to use it / when not to

Use it for: any .30 cal PCP accuracy work, paper testing, hunting where you want a domed projectile (not all .30 hunting needs hollow points), volume practice with a .30 cal rifle.

Skip it for: dedicated hunting where you want hollow point expansion (use JSB Hades .30 — same weight, hollow head), or extreme high-power applications where slugs become the better projectile choice.

Honest trade-offs

150 per tin is the .30 cal standard. .30 cal shooters typically shoot fewer pellets per session than .22 cal shooters — a tin lasts a while.

Premium price. Expensive per pellet compared to budget options like JTS or Snowpeak. For .30 cal — a low-volume hunting caliber — the cost-per-shot premium is reasonable.

Slow stock movement. Only 8 orders in the partner’s history. .30 is a niche caliber; pellets sit longer than .22 stock. The flip side is current availability (15 tins as of writing) — JSB .30 is usually buyable.

Limited weight options. Unlike .177 and .22 where JSB offers a range from lightweight to monster, in .30 cal there are essentially two options at the partner: this 44.75gr domed, or the 44.75gr Hades hollow point. If your rifle wants a heavier or lighter .30 cal pellet, you’re shopping outside the partner.

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