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What is Hit Factor, and how is it measured and calculated in USPSA scoring?

Hit factor infographic: scored points divided by time, comparing three example runs

What is the definition of Hit Factor in USPSA scoring?

Hit factor is the measure of a competitor's performance and how well they can manage the balance of speed and accuracy. Hit factor is exclusively used in USPSA and IPSC competitions, where the number represents how many points you score per second on a given stage. The higher the number, the better your stage score. This points-per-second scoring is known as the Comstock method, the standard scoring used for USPSA field courses.

How do you calculate Hit Factor?

You can calculate your hit factor (HF) by adding your scored hits to get a total number of scored points (SP). You then subtract any penalties (P), and this number gives you your total points (TP) for a stage. You divide your total points (TP) by your stage time (T) to get your hit factor (HF). The calculation looks like this:

[ Scored PointsPenalties ] ÷ Time = Hit Factor
[ SPP ] / T = HF

Examples

Here are three examples, these hit factors are very close, but it's the balance of speed and accuracy that delivers the highest overall Hit Factor.

1Most Penalties / Fastest Time
100 SP30 P / 10 s
7.0HF
2Highest Score / Slowest Time
110 SP0 P / 15 s
7.3HF
3Balance Speed and Accuracy: Delivers the Highest HF
90 SP0 P / 12 s
7.5HF

What is the difference between STAGES with High vs. Low Hit Factors?

High Hit Factor
Points70%
More points, less time
Low Hit Factor
Time70%
Fewer points, more time
PointsTime
High Hit Factor
High hit factor (HF) stages are driven by higher points collected in a shorter period of time. Stages with fast transitions and low movement tend to run faster than larger stages with longer transitions.
Low Hit Factor
Low hit factor (HF) stages collect fewer points over a longer period of time. Stages with longer transition times, high movement, and more challenging targets will take longer to collect the highest scoring points.

Why Hit Factor Matters

How do I improve my Hit Factor?

When you look at a stage, you should assess your ability to move efficiently through the course of fire in order to achieve the best score in the shortest amount of time - (Points per second). For example, evaluate the way you enter a shooting position with your gun up, ready to engage - or how fast you can exit a position to get to the next one. The top competitors make the movements look effortless as they collect the highest points.

Hit Factor - Stage Strategy Checklist

In summary, use the highest power factor for your division, get better scoring hits, watch your penalties, and operate quickly to achieve the highest hit factor. It takes the right balance to win.

What is Power Factor, and how does it work in USPSA scoring?

Hit Factor FAQ

What is a good Hit Factor in USPSA?

Hit Factor is relative to the stage, so there is no single “good” number. On each stage the top performer sets the 100% benchmark and everyone else scores as a percentage of that run. A strong Hit Factor is one close to the best competitors on that specific stage and division.

What is the difference between Hit Factor and Power Factor?

Hit Factor measures your scoring efficiency on a stage: total points divided by time. Power Factor measures your ammunition’s momentum (bullet weight times velocity, divided by 1,000) and sets whether you score Major or Minor. Power Factor feeds the points that go into Hit Factor, but they are two different things.

How do penalties affect Hit Factor?

Penalties subtract from your scored points before the total is divided by time. A single miss or procedural can drop your points enough to lower your Hit Factor sharply, which is why avoiding penalties often matters more than shaving a fraction of a second.

Does a faster time always mean a higher Hit Factor?

No. Because Hit Factor is points divided by time, speed only helps if your points stay high. Rushing into misses or penalties costs more points than the time you save, so the best Hit Factor comes from balancing speed and accuracy.

How is Hit Factor used for classification?

On standardized classifier stages, your Hit Factor is compared against established benchmarks to produce a percentage, which determines your USPSA classification. Because the stage is identical for everyone, Hit Factor is a consistent way to measure and compare skill across competitors.