+1 - interesting!
I guess that the %% increase is done with every addition to the different numbers but outside the counting for display - a lot of complaints ahead!
The shots are counted immediately, probably as 1, 1.02, 1.05 respectively. Perhaps they are rounded up too often or too generously, thus producing the surplus. The boni come with the successful end of the round, with their %%, too.
At least, after this valuable work, I'm convinced that we get what is declared, and more.
Thanks a lot, Du!