I don’t think you get 10% cooldown per rush stack with Phasezerker mod. I have that class mod and ran some basic tests.
With 25 rush stacks and 25% from skills, The fastest I could get phaseslam to come back was 20 seconds. Ties that Bind takes about 10 seconds to cooldown.
Considering I should be seeing cooldown that equals 275% cooldown bonus based on that legendary class mod description, phaseslam should be coming back in 9.33 seconds. Ties that Bind should be coming back in 4.8 seconds.
Obviously those numbers would be overpowered, so I’m just curious what the actual bonus is from the Phasezerker mod at full 25 stacks.
Is the gun damage buff also not exactly x25?