JSB Pellet Ballistic Coefficient Chart

When tuning your air rifle for peak accuracy and power, understanding airgun ballistics is critical. A JSB pellet ballistic coefficient chart is an essential tool for shooters. It provides the aerodynamic drag profile, known as the Ballistic Coefficient (BC), for each pellet. BC matters for airgun shooting because it dictates how efficiently a pellet cuts through the air. A higher BC translates to a flatter pellet trajectory, significantly more retained energy downrange, and heavily reduced pellet wind drift. In the comprehensive chart below, you will find the BC, sectional density, and recommended applications for the most popular JSB Match Diabolo pellets and slugs to help you dominate both the target range and the hunting field.

JSB Pellet Ballistic Coefficient Chart

Caliber	Pellet Name	Weight (gr)	Pellet Type	Ballistic Coefficient (BC)	Sectional Density	Recommended Velocity (fps)	Best Application
.177	JSB Match Diabolo Light	7.33	Wadcutter	0.010	0.033	500-600	Target
.177	JSB Exact RS	7.33	Domed	0.011	0.033	750-850	Target / Pest Control
.177	JSB Match Diabolo Middle	7.72	Wadcutter	0.011	0.035	500-600	Target
.177	JSB Exact Express	7.87	Domed	0.015	0.036	800-900	Target / Hunting
.177	JSB Match Diabolo Heavy	8.26	Wadcutter	0.012	0.038	550-650	Target
.177	JSB Straton	8.26	Pointed	0.016	0.038	800-900	Hunting
.177	JSB Exact	8.44	Domed	0.021	0.038	800-900	Target / Hunting
.177	JSB Exact Premium	8.44	Domed	0.021	0.038	800-900	Target
.177	JSB KnockOut Slugs	10.03	Slug	0.047	0.046	850-950	Long Range / Hunting
.177	JSB Exact Heavy	10.34	Domed	0.031	0.047	800-900	Target / Hunting
.177	JSB Hades	10.34	Hollow Point	0.026	0.047	800-900	Hunting / Pest Control
.177	JSB KnockOut Slugs	13.43	Slug	0.066	0.061	850-950	Long Range / Hunting
.177	JSB Exact Monster	13.43	Domed	0.040	0.061	800-900	Long Range / Hunting
.177	JSB Exact Monster Redesigned	13.43	Domed	0.043	0.061	850-950	Long Range / Hunting
.177	JSB Exact Beast	16.20	Domed	0.047	0.074	800-950	Long Range / Hunting
.20	JSB Exact	13.73	Domed	0.029	0.049	800-900	Target / Hunting
.22	JSB Exact Jumbo RS	13.43	Domed	0.021	0.040	750-850	Target / Pest Control
.22	JSB Exact Jumbo Express	14.35	Domed	0.025	0.042	800-900	Target / Hunting
.22	JSB Straton Jumbo	15.89	Pointed	0.024	0.047	800-900	Hunting
.22	JSB Exact Jumbo	15.89	Domed	0.031	0.047	800-900	Target / Hunting
.22	JSB Exact Premium	15.89	Domed	0.031	0.047	800-900	Target
.22	JSB Hades	15.89	Hollow Point	0.026	0.047	800-900	Hunting / Pest Control
.22	JSB Exact Jumbo Heavy	18.13	Domed	0.033	0.054	800-900	Target / Hunting
.22	JSB KnockOut Slugs	25.39	Slug	0.084	0.075	850-950	Long Range / Hunting
.22	JSB Exact Jumbo Monster	25.39	Domed	0.039	0.075	800-950	Long Range / Hunting
.22	JSB Exact Monster Redesigned	25.39	Domed	0.042	0.075	850-950	Long Range / Hunting
.22	JSB Exact Jumbo Beast	33.95	Domed	0.051	0.100	850-950	Long Range / Hunting
.25	JSB Exact King	25.39	Domed	0.036	0.058	800-900	Target / Hunting
.25	JSB Exact King Premium	25.39	Domed	0.036	0.058	800-900	Target
.25	JSB Straton King	25.39	Pointed	0.033	0.058	800-900	Hunting
.25	JSB Hades	26.54	Hollow Point	0.031	0.061	800-900	Hunting / Pest Control
.25	JSB KnockOut Slugs	33.49	Slug	0.090	0.077	850-950	Long Range / Hunting
.25	JSB Exact King Heavy	33.95	Domed	0.045	0.078	800-950	Target / Long Range
.25	JSB Exact King Heavy MKII	33.95	Domed	0.046	0.078	850-950	Target / Long Range
.25	JSB KnockOut Slugs MKII	33.95	Slug	0.092	0.078	850-980	Long Range / Hunting
.30	JSB Hades	44.75	Hollow Point	0.040	0.071	800-900	Hunting / Pest Control
.30	JSB Exact Boss	44.75	Domed	0.045	0.071	800-900	Target / Hunting
.30	JSB Exact	50.15	Domed	0.050	0.080	800-950	Target / Long Range
.30	JSB KnockOut Slugs	50.15	Slug	0.110	0.080	850-950	Long Range / Hunting
.35	JSB Exact	81.02	Domed	0.065	0.091	800-950	Hunting / Long Range
.35	JSB KnockOut Slugs	81.02	Slug	0.125	0.091	850-980	Long Range / Hunting

(Note: While these are the standard and widely accepted G1/GA BC values derived from manufacturer data and prominent airgun ballistics databases like ChairGun, specific BC values may vary slightly depending on your exact muzzle velocity, barrel choke, and current atmospheric testing conditions.)

JSB Pellet Ballistic Coefficient Chart Image

How to Read the JSB Pellet Ballistic Coefficient Chart

To get the most out of this JSB BC chart, you need to understand what each column represents:

• Caliber: The diameter of the projectile, matching your air rifle’s barrel (e.g., .177, .22, .25).
• Pellet Name: The official JSB model designation.
• Weight (gr): The physical weight of the pellet measured in grains (not grams). Weight is a massive factor in energy retention.
• Pellet Type: The aerodynamic shape of the projectile head (Domed, Hollow Point, Pointed, Wadcutter, or Slug).
• Ballistic Coefficient (BC): The mathematical representation of the projectile’s ability to overcome air resistance. Higher numbers mean better aerodynamics.
• Sectional Density: A ratio of the pellet’s weight to its diameter. Higher sectional density usually points to better target penetration.
• Recommended Velocity (fps): The optimal feet per second range where the pellet maintains stability and flies true.
• Best Application: A quick reference for what the projectile is designed to do (Target, Hunting, Long Range, Pest Control).

Highest Ballistic Coefficient JSB Pellets

When looking for the absolute highest pellet BC values, you must look at the JSB KnockOut Slugs line. Slugs feature a bullet-like shape, completely eliminating the high-drag waist found on traditional diabolo pellets.

For instance, the .30 caliber KnockOut Slug holds an impressive BC of 0.110, while the .35 caliber sits at 0.125. Among traditional domed air rifle pellets, heavyweights like the JSB Exact Monster Redesigned and JSB Exact Beast carry the highest BCs for their respective calibers. Because they cut through the air so efficiently, they retain their velocity and striking energy exponentially better than standard-weight pellets at 50 to 100 yards.

Best JSB Pellets for Long-Range Shooting

Long-range airgun pellets must combat wind drift and rapid deceleration. For extreme distances (100+ yards), JSB KnockOut Slugs are the undisputed kings, provided you have an unchoked barrel and enough power to push them.

If your air rifle shoots traditional pellets better, the JSB Exact Heavy (.177), JSB Exact Monster Redesigned (.22), and JSB Exact King Heavy MKII (.25) are your best options. The JSB Exact Heavy BC and other heavyweight domed BCs provide exceptional in-flight stability past 50 yards.

Best JSB Pellets for Hunting

Hunting requires a balance of flat trajectory, pinpoint accuracy, and devastating terminal performance. The JSB Hades lineup is arguably the best hunting pellet currently on the market. While the JSB Hades BC is slightly lower than the standard Exact domed variants, its proprietary fractured hollow point design ensures massive energy transfer upon impact. This unique design also prevents over-penetration.

For heavy-boned pests or longer hunting shots, standard heavy domed pellets like the Exact Jumbo Heavy offer excellent penetration. KnockOut slugs also deliver incredible terminal expansion at high impact velocities.

Best JSB Pellets for Target Shooting

For target shooters, consistency often trumps ballistic coefficient. Shooting at known, fixed distances requires a pellet that releases from the muzzle identically every time.

The standard weight diabolos are legendary in competition circles. The JSB Exact (.177, 8.44gr), JSB Exact Jumbo (.22, 15.89gr), and JSB Exact King (.25, 25.39gr) offer the perfect blend of moderate BC and high velocity. The JSB Exact BC is perfectly optimized for speeds between 850 and 900 fps, maintaining a beautifully predictable arc. For 10-meter indoor ranges, flat-headed Wadcutters (JSB Match Diabolo) remain the standard.

Ballistic Coefficient by Caliber

A general rule in airgun ballistics is that as caliber increases, the Ballistic Coefficient increases. This happens because the weight of the lead increases at a faster rate than the frontal surface area which creates drag.

• .177 Caliber: Generally features BCs ranging from 0.015 to 0.030 for diabolos. Excellent for flat, short-range shooting, but highly susceptible to wind drift at a distance.
• .22 Caliber: The perfect middle ground. BCs range from 0.025 to 0.045 for pellets.
• .25 Caliber: The hunter’s favorite. BCs sit steadily between 0.035 and 0.050, shrugging off moderate winds.
• .30 Caliber: Built for raw power. Standard diabolos hit BCs of 0.045 to 0.050, while slugs easily break the 0.110 barrier.

Why Ballistic Coefficient Changes

You might notice that different ballistic calculators give slightly different JSB BC chart numbers. This is because BC is not a static, unchangeable law of physics. It is highly dynamic and changes based on several factors:

• Pellet Velocity: Drag increases exponentially as a pellet approaches the speed of sound. A pellet traveling at 950 fps has a slightly different effective BC than the exact same pellet traveling at 600 fps.
• Pellet Shape: Domed heads cut air efficiently. Hollow points catch air. Flat wadcutters hit the air like a brick wall.
• Pellet Weight: Heavier pellets carry more momentum, pushing through air resistance more easily.
• Air Resistance & Atmospheric Conditions: Humidity, temperature, and elevation all change air density. A pellet shot in the thin air of high-altitude mountains will effectively display a higher BC than one shot at sea level.

Does a Higher Ballistic Coefficient Mean Better Accuracy?

It is a common misconception that picking the pellet with the highest BC automatically guarantees tight groups. A high BC improves external ballistics, but it does not inherently guarantee mechanical accuracy.

A high BC will dramatically reduce wind drift, maintain a flatter pellet trajectory at long ranges, and deliver more retained energy to the target. However, if your specific rifle barrel doesn’t like the projectile, perhaps due to the twist rate, choke tightness, or pushing the pellet too slow or fast, the projectile will spiral or tumble.

Shooter skill, high-quality rifle tuning, and physically matching the correct JSB pellet shape to your barrel’s rifling are just as critical to accuracy as the airgun pellet ballistic coefficient itself. Always test a variety of weights from the JSB pellet chart in your own gun to find the perfect harmony of aerodynamics and mechanical precision.