Are Moly coated bullets really faster?
The materials required for this science fair project are:
- 1 rifle
- 10 non lubricant-coated rifle bullets
- 10 moly-coated rifle bullets
- 1 trained, qualified adult to handle the rifle
- shooting ear muffs
- 1 chronograph to measure bullet velocity
- 1 rifle stand
- Firing range
1. The independent variable of this science fair project is the coating on the bullet – moly coated and non-coated bullets . The dependent variable is the speed of the bullet. This is measured using a chronograph. The constants (control variables) are the type of the rifle, the weight of the bullet and the sensitivity of the chronograph.
2. Set up the rifle on the rifle stand, 3 meters away from the chronograph. Load the rifle with the bullets that are non coated. Fire ten shots using the non coated bullets. Measure the velocity of the bullets using the chronograph. Record the measurements in the table provided below. Obtain the average velocity of the non coated bullets from the 10 shots.
3. The procedure 2 is repeated using the 10 moly-coated bullets. The speeds are again measured using the chronograph and the velocities are recorded in the table below. The average speed for the moly-coated bullets is also calculated.
1. Unauthorized use of firearms is illegal. Some countries carry extremely heavy penalties for the illegal possession or use of firearms.
2. Ensure that only a trained and authorized/licensed person is allowed to handle the firearm.
3. The tests must be conducted in a safe environment - eg a proper shooting range.