When you catch it evolving is a good time. Multiplied health damage FTW. Normally, though, I don’t shoot while chasing it. Always on Stasis so I can keep up.
Also, it’s not useless to charge shots once armor is gone. Spam firing is less effective than a charged shot, so it’s still a good thing to do.
Note: It’s just as powerful to shoot uncharged shots, but you run the risk of missing some damage if you do, while a charged shot is more accurate and it’s powerful enough to make up for the time you weren’t firing. Hence, less effective than charged.
That’s my opinion, anyway. @Crowdalra is the only resident Crow main I can think of.