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Steyr Sport FAQ

Joules of Energy

One of the most common questions we receive is in regards to “Joules” of energy.  Many shooters are unsure of the measurement ( Joules ) and what the number actually means.  You will notice that our 0.22” caliber Hunting 5 rifle comes in 40 joules, but that may not really explain much to shooter inexperienced with air rifles.

For most shooters in the USA, when assessing the power of a firearm, the most common measurement is Foot Pounds of Energy ( fpe ).   This is basically derived from the weight of the bullet and the velocity it is traveling at a particular distance.  Most measurements are taken close to the muzzle for these calculations.

In the world of air rifles, this measurement of energy is represented in Joules, often simply shown as “j” in catalogs and websites.  Because joules of energy can be used to measure many different aspects in physics, for this discussion we will be discussing the kinetic form of energy. 

The simplest way to see this is to take ½ the mass of the pellet and multiply it by the squared velocity that the pellet is traveling.  There are plenty of websites which will dig deeper into this, but to make this simpler we have given some measurements and comparisons to make this a bit more understandable.


40 Joule Hunting 5 Automatic Scout

Measurement in Joules
​
Muzzle Velocity: 266 meters per second (mps )
Pellet Weight: 18.1 grains
Energy: 41.6 joules
Measurement in Foot Pounds of Energy

Muzzle Velocity: 872.7 feet per second ( fps )
Pellet Weight: 18.1 grains
Foot Pounds of Energy: 30.6 fpe
Measurement for Standard Velocity .22lr Cartridge

Muzzle Velocity: 1070 feet per second ( fps )
Pellet Weight: 40 grains
Foot Pounds of Energy: 102 fpe

As you can see, the .22lr standard velocity cartridge offers slightly more than three times the energy when compared to the 0.22” caliber air rifle.   We hope this comparison helps give some perspective as to the power of these high-power air rifles.

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  • Home
  • Factory Rifles
    • Sporting Models
    • APR / NRL / PRS Models
    • Anniversary Models
    • Match Models
    • Biathlon Models
    • Air Rifles
    • Centerfire Models
    • Benchrest Models
    • Left Hand Rifles
    • Laser Power Models
    • Barreled Actions
  • ANA Exclusives
    • Meister Grade Series
    • APR / NRL / PRS Models
    • Canyon Creek Series
    • Limited Run Series
    • GRS Series
    • Rimfire Trainer Series
  • Specials
    • Gun of the Month
    • On Sale,Demo, Display & Discontinued
    • Parts, Ammunition, Acc.
  • Parts & Ammo
    • Parts
    • Ammunition
    • Air Rifle Parts
    • Barrels
    • Stocks
    • Shooting Apparel
    • Gear & Acc
  • Service
    • Technical Questions
    • Maintenance Tips
    • Air Rifle Service
    • Accuracy Testing Services
    • Service for MSR-RX 22
    • Steyr Sport Service
  • Contact