I agree with Phaze, the equation seems correct: Here is the "test" all I get for his equation. I think there is an additional set of points being given from "points for hits" in the game tab. I prefer to keep all the points for playing in the equation field rather than have the points being given from a bunch of different spots - then it is easier to see where points are coming from.

This "test all" shows what would happen if everyone had 6 hits, but it will only add the extra 6 points to the person who actually had 6 hits

1st, 30, 36.00

2nd, 29, 35.00

3rd, 28, 34.00

4th, 27, 33.00

5th, 26, 32.00

6th, 25, 31.00

7th, 24, 30.00

8th, 23, 29.00

9th, 22, 28.00

10th, 21, 27.00

11th, 20, 26.00

12th, 19, 25.00

13th, 18, 24.00

14th, 17, 23.00

15th, 16, 22.00

16th, 15, 21.00

17th, 14, 20.00

18th, 13, 19.00

19th, 12, 18.00

20th, 11, 17.00

21st, 10, 16.00

22nd, 9, 15.00

23rd, 8, 14.00

24th, 7, 13.00

25th, 6, 12.00

26th, 5, 11.00

27th, 4, 10.00

28th, 3, 9.00

29th, 2, 8.00

30th, 1, 7.00