Gunbreaker Bloodfest should grant three free uses instead of three carts

[ThorneDynasty]

Being able to burst or not at all is not a skill expression thing.

If you are dropping burst altogether because you have to delay Bloodfest or spend a cartridge ahead of time, that's a 100% skill issue.

Literally what does it matter if GNB in certain scenarios can't do an ideal burst, and it's up to player foresight to adjust to the next best thing, when it's the top DPS tank anyway? Point to me on FFLogs in what content this fight-specific downtime is suddenly ruining GNB output.

[Arohk]

If you are dropping burst altogether because you have to delay Bloodfest or spend a cartridge ahead of time, that's a 100% skill issue.

what is the skill issue when the boss decides that you can't attack it?

[CKNovel]

what is the skill issue when the boss decides that you can't attack it?

You don't have to spend all your ammos, it's up to you to be creative and start your next burst with 3 cartridges.
There's no situation where you exit a burst window and absolutely can't generate 3 cartridges.