Arrow Weight Formula:
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Arrow weight is the total mass of an arrow, including all its components. It's measured in grains and affects arrow speed, trajectory, and penetration power.
The calculator uses the simple formula:
Where:
Explanation: The equation simply sums up the weights of all arrow components to get the total arrow weight.
Details: Arrow weight affects bow performance, arrow speed, kinetic energy, and penetration. Heavier arrows are slower but penetrate better, while lighter arrows are faster but may lack penetration power.
Tips: Enter the weight of each component in grains. All values must be positive numbers. Typical arrow weights range from 300 to 500 grains for target archery and 400 to 600 grains for hunting.
Q1: Why measure arrow weight in grains?
A: Grains (1 grain = 1/7000 pound) provide precise measurement for small weights like arrow components.
Q2: What's a good arrow weight for target shooting?
A: Typically 350-500 grains, depending on bow type and draw weight. Lighter arrows fly faster but may be less stable.
Q3: How does arrow weight affect bow tuning?
A: Heavier arrows require more energy to accelerate, which can affect bow tuning and arrow spine requirements.
Q4: Should I include nock weight?
A: Standard nock weight is usually negligible (2-5 grains), but you can include it in the fletching weight if desired.
Q5: How does arrow weight affect kinetic energy?
A: Kinetic energy = (mass × velocity²)/2. While heavier arrows are slower, they often maintain more energy downrange.