Talk:Expedition/@comment-26079027-20150415195947/@comment-25730832-20150416033303

We're having a test on that going on:

http://kancolle.wikia.com/wiki/User_blog:Kitahara/Recording_drum_expedition_success_rates

Also, since I was doing the drum testing I can give you one hypothesis that I had right now:

There's a Great success rate cap for drums, which mean when reaching a certain number of drum the rate will cap out. So let's say the cap is 50% then no matter how many drums you put it you'll still get only 50% chance of Great success and the leftover needs to be increase via sparkle ships.

This is just an hypothesis, don't take it for grant yet. But it might help clear your doubt.