The inherent robustness doesn’t translate into bulk; with an overall weight just shy of 1kg, and vital statistics of 210 x 105 x 100mm, it’s easily portable to take to the range, and doesn’t take up much room on the workbench, either.

When the cover is replaced, be careful that the two slots allow access to the sensors below. It is possible to fit it the wrong way round, which means the sensors are occluded and the device becomes inoperative. The unit comes with a lead to transfer information via a data port to a computer, and a charging cable which also attaches to a PC. The Shooting Party recommends the Ballistically Brilliant Chronograph be fully charged before use, and says it can handle velocities up to 2,789 fps. For example, a ‘chrony’ will determine the sweet spot on your PCP – the fill pressure range where your rifle is most consistent. It will also help you identify potential problems, and for you tinkerers out there, it will validate the effectiveness, or otherwise, of your labours. (Looking for a compressor for airguns – take a look at our list of the best options.) There’s an integrated lithium-ion battery which will give a run time of between two and 12 hours, depending on how much the lights are used.Obtain directly in joules (or in ft / lb - Imperial System) the energy of the projectiles of your pneumatic weapon or firearm (Cal .22 LR or similar), you just have to provide the weight of the projectile to the device, recording it in it by operating the buttons that appear on the front of it. Shoot through the window, the device will inform you of the speed of the projectile and the energy calculated directly in joules or in ft / lb depending on whether we choose the metric system or the imperial system. However, if I put the JSBs through the wrong gun, this will drop to 590fps. There is no doubt that a faster pellet will take less wind and have a flatter trajectory, and there can also be a bigger difference between pellets with different head sizes. Let’s start with the construction; fabricated from 1.2mm steel, coated with a textured paint that brings to mind cameras from the 1960s, or indeed the dashboard of a classic MG sports car. In one word, probably best summed up as ‘robust’ with the overall im==ression that providing you don’t shoot it, it’s something that’s going to be with you for the long haul. Q: A lot of airgun shooters at my local club have their own chronograph, which they use when shooting from the bench. Is this an important accessory to have, and what are its uses?

The other day, my rifle was feeling ‘wrong’, and when I shot it over the chronograph, it was running at 730fps, so I knew that either a seal had failed, or something more catastrophic had happened, and when I took the rifle apart, I found that I had a broken spring. So, having a chrono’ immediately pointed me toward a problem. A chronograph is also essential if you plan to tune your airgun by adjusting factors such as regulator pressure and hammer spring tension. The measurements you take will reveal what effect your adjustments are having on the pellet’s velocity and your airgun’s muzzle energy. So, let’s say your .22 rifle gives a reading of 530 fps. With 16 grain pellets, that would be: (530 x 530 x 16) / 450,240 = 9.98 ft-lb. Fortunately, if maths isn’t your thing, plenty of calculators on the internet will do the number-crunching for you. Shoot through the chronograph window with a distance from the muzzle (for airguns) of about 10/20 cm. and about 40/50 cm in the case of a 22 LR caliber firearm. or similar. The apparatus will give the projectile velocity and energy readings in joules directly. The G2 provides a large area through which to shoot, which is handy as Caldwell recommends standing 10 to 15 feet away, though I’m sure you could get away with being much closer when using an air rifle.The bluetooth connector module that can be seen assembled in the main image is not included in the sale price of the chronograph) The LMBR chronograph is the brainchild of Radoslaw Koziol an electronics/ telecommunications engineer based in Bartag, a small village in Poland. His original work started in 2007/08, and in his own words, was more a hobby than anything else. As often happens, matters started to get a bit more serious, and he changed the brief to produce a reliable practical device capable of producing data that would be useful to the shooting community. From my findings, I think he has achieved his brief and then some, but I’m getting ahead of myself. The essential companion for anyone involved with airgun maintenance. El equipo se presenta en un formato bastante discreto de tamaño, es portable en cualquier bolsa de tiro normal. Se trata de un equipo compacto que hace todo el trabajo tal cual viene, sin cables, sin pantallas difusoras, sin abrazaderas ni agarres, “una maravilla”. Todo su armazón es metálico, se ve robusto y bien hecho además de atractivo en su diseño. Podemos ponerlo directamente sobre una mesa o enroscarlo en un trípode convencional para cámara fotográfica. Posee un display retroiluminado que podemos desactivar si lo deseamos, el cual está muy inteligentemente orientado hacia el tirador, por lo cual observaremos las mediciones directamente.