[Wetdogeared]

It took me 9 steps from start, if I'm correct.

Spoiler:

1. 0 0 16 (Starting contents of 7 pint, 3 pint and 2 gallon buckets)
2. 7 3 00 (Fill 7 and 3 pint buckets and discard remainder of 2 gallon bucket leaving 10 pints total)
3. 0 0 10 (Empty both 7 and 3 pint buckets into 2 gallon bucket)
4. 0 3 07 (Fill 3 pint bucket from 2 gallon bucket)
5. 3 0 07 (Empty 3 pint bucket into 7 pint bucket)
6. 3 3 04 (Fill 3 pint bucket from 2 gallon bucket)
7. 6 0 04 (Empty 3 pint bucket into 7 pint bucket)
8. 6 3 01 (Fill 3 pint bucket from 2 gallon bucket)
9. 7 2 01 (Top up 7 pint bucket from 3 pint bucket)
10. 0 2 08 (Pour 7 pint bucket into 2 gallon bucket to get 8 pints)

*edit* I could have skipped step 3