USPSA Target Scaling
To determine the distance to place a target that has a known height to simulate a USPSA target at a known distance:
- USPSA Target Height = 30 inches
- USPSA Target Distance = 75 feet
- Scaled Target Height = 10 inches
- Place At Distance = ? feet
- PAD = ((STH / UTH) x UTD
To scale a USPSA target:
- USPSA Target Height = 30 inches
- USPSA Target Distance = 30 feet
- Scaled Distance = 9 feet
- Scaled Height = ? inches
- Scaling Percentage = ? percent
- SH = (SD / UTD) * UTH
- SP = UTD / SD
These targets (25 KB) will be 9" high when printed at 100%. They can be scaled up or down to simulate a USPSA target at various distances. The table below shows various scalings for placement at 9 feet. For instance, to simulate a USPSA target at 21 feet, print the target with 142.9% scaling, and place at 9 feet. If you wish to place these targets at other than 9 feet, you'll have to do the math above, and adjust the scaling factor accordingly. Note that anything larger than 100% will require larger paper or printing on multiple sheets and splicing together.
Note that while the scaling will be correct at whatever distance, the actual focal distance will be different. Your eyes will be focusing at 9 feet instead of at 30 feet, so if you have vision issues, you may want to place the target as far as possible away, and ideally use actual USPSA targets at the desired distance.
Distance | Scaled Height | Scaling % |
---|---|---|
15 | 18.0" | 200.0% |
21 | 12.9" | 142.9% |
30 | 9.0" | 100.0% |
45 | 6.0" | 66.7% |
75 | 3.6" | 40.0% |
Distance | Scaled Height | Scaling % |
---|---|---|
15 | 24.3" | 270.0% |
21 | 17.4" | 193.3% |
30 | 12.2" | 135.5% |
45 | 8.1" | 90.0% |
75 | 4.8" | 53.3% |