Collection: Air Chrony

Air Chrony Chronographs in South Africa

Air Chrony makes chronographs for measuring projectile velocity, and the MK1 is the model stocked here at R4,578. A chronograph is the instrument that turns guesswork into data: without one, you do not know what your rifle is actually producing, only what the specification claims.

Why a chronograph matters

Velocity is the number every other calculation depends on. Ballistic drop, energy on target and the effect of a pellet or bullet weight change are all derived from it. On a PCP in particular, velocity varies across a fill as pressure drops, and the only way to find your usable shot count is to measure it. Tuning a regulator, comparing pellet weights or working out why groups open up at distance all start with knowing the number rather than estimating it.

Common questions

Where do you position it? Ahead of the muzzle at the distance specified for the unit, aligned so the projectile passes cleanly through the sensor window. Too close and muzzle blast interferes with the reading.

Does lighting affect readings? Optical chronographs read the shadow of the projectile against ambient light, so consistent lighting gives more reliable results than direct hard sunlight or deep shade.

What is a good shot string? Ten or more shots, then look at the spread between highest and lowest as well as the average. A tight extreme spread matters more than a high average for accuracy at distance.

Please note: this collection also contains Tactical Evo bipods and muzzle brakes, which are supplied under a different brand. Check the product title before ordering.

Related: Air Rifles · Bipods · Airgun Ammunition · Accessories