Performance against the elements.
With over 198 years of heritage and experience, engineering excellence is central to the success of ELEY tenex. Our highly skilled engineers combine state of the art machinery with high speed electronic visual inspection systems and Six Sigma methodologies to produce the cartridges that have redefined .22LR accuracy across the world.
ELEY tenex biathlon launched in 2012 following comprehensive research and development of biathlon sport, the athletes and their needs. ELEY tenex was used as a platform on which to build this new cartridge.
The iconic flat nose projectile of ELEY tenex is one of many innovations pioneered by ELEY engineers. As it cuts through the air its revolutionary design pulls the centre of pressure forwards, aerodynamically stabilizing the projectile and increasing accuracy at the target.
Examination of bullet and chambering characteristics at freezing temperatures led to a reduction in the diameter of the cartridge to aid cycling in bolt-action or straight-pull biathlon rifles. A scientifically designed lubricant was developed to suit cold temperatures, aiding consistency and reducing barrel wear. ELEY tenex biathlon also benefits from an increased propellant charge giving the bullet enhanced terminal energy and a greater knock down force needed for the biathlon target.
| Bullet Profile | Bullet Weight | Mean Velocity m/s | Mean velocity ft/s | Max Radial Standard Deviation | Lubricant | Cartridge Length | Ballistic Coefficient | Drag Model | Strike Depth | Recommended Head space |
|---|---|---|---|---|---|---|---|---|---|---|
| Flat-nose | 2.59 grams / 40 grains | 335m/s-354m/s | 1100ft/s-1160ft/s | 4.50mm | Biathlon | 25.4mm / 1 inch | 0.112 | RA4 | 0.012-0.015 in | 00.040-00.041 in |
Strike depth
The diagram below displays a cartridge case that has been shot. The indent, where the firing pin has hit the cartridge, is called a strike.
It is important to measure the strike depth on the cartridge because this is the point where the primer is activated.
A minimum strike depth is necessary to transmit sufficient energy to the primer to cause its ignition and ensure that the cartridge does not misfire.
The ideal strike depth for an ELEY cartridge is between 0.012–0.015 in. This depth can be measured using a strike depth gauge.
Batch numbers
Every box of ELEY ammunition has a specific number code printed on the end panel of the box.
The code relates to the grade of the product, manufacturing year, the loader on which it was produced, the batch number, and the average velocity of the ammunition across four barrels during the proofing process.
10 = Loaded product 26 = Year of manufacture 04 = Loader number 244 = Batch number for loader 1045 = Mean velocity across four barrels
If you love data, you can explore our premium ammunition proof data by entering the batch number online. Go to www.eleyxshot.com and create a free account.
ELEY vip – It’s all about you!
If you would like to discover how to achieve the ultimate performance with ELEY ammunition, visit www.eley.co.uk/vip It’s the quickest way to get the help you need.
Batch testing
Velocity and proofing
Cleaning you barrel
Understanding head space

