I don't think they ever shortened Ice Breaker's recharge speed, I've had one since the third day of the game.
That's actually the biggest kicker for me, although I don't get my IB out much anymore, it's still a god-tier weapon, but 8 seconds sounds way too long.... They could've at least increased the chance of automatically refilling a round.
The Black Hammer nerf actually sounds fine to me. It's really not that bad. 18 shots then you just have to source some ammo, hardly the end of the world.
Can't believe some other guns didn't get any buff, like No Land Beyond and Dragon's Breath.