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Hi. Me and my friend made an experiment with this airsoft gun
We had three different BB weights to try out  0.12 gram, 0.20 gram and 0.32 gram. We measured the velocity in m/s with a chronograph.
The chronograph shows also the muzzle energy but a simple calculation using the weight and the velocity provided exactly the same value as the one shown on the chronograph.
We fired 10 shots with each BB weight and made and MS Excel table.
To my surprise the heavier the pellet the higher the muzzle energy delivered. Consistently. 0.12 gram pellet delivered as high as 0.6 joules. 0.2 gram pellet delivered as high as 0.73 joules. 0.32 pellet delivered as high as 1 joules!
Why is the gun able to deliver higher energies with heavier pellets? Initially, I thought that the capacity of the gun to deliver a given amount of joules to the BB is fixed and should not depend on the pellet mass.
For a heavier bullet, the velocities are lower of course. But apparently not low enough to compensate for the higher mass in the formula. In the end, the heavier BB moves slower, but still fast enough to deliver higher energy than a lighter BB.
Please someone try to explain this in details to me. It's troubling me awfully. The Excel table with measured velocities is attached. Thanks a million in advance.
We had three different BB weights to try out  0.12 gram, 0.20 gram and 0.32 gram. We measured the velocity in m/s with a chronograph.
The chronograph shows also the muzzle energy but a simple calculation using the weight and the velocity provided exactly the same value as the one shown on the chronograph.
We fired 10 shots with each BB weight and made and MS Excel table.
To my surprise the heavier the pellet the higher the muzzle energy delivered. Consistently. 0.12 gram pellet delivered as high as 0.6 joules. 0.2 gram pellet delivered as high as 0.73 joules. 0.32 pellet delivered as high as 1 joules!
Why is the gun able to deliver higher energies with heavier pellets? Initially, I thought that the capacity of the gun to deliver a given amount of joules to the BB is fixed and should not depend on the pellet mass.
For a heavier bullet, the velocities are lower of course. But apparently not low enough to compensate for the higher mass in the formula. In the end, the heavier BB moves slower, but still fast enough to deliver higher energy than a lighter BB.
Please someone try to explain this in details to me. It's troubling me awfully. The Excel table with measured velocities is attached. Thanks a million in advance.
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