jump the gun

Trump has reason to jump the gun on taking credit for the economy now: It’s doing amazingly well.

Further questions were raised last week when the British military seemed to jump the gun in announcing Kate would attend a Trooping the Color ceremony in June, apparently without consulting palace officials.

Prior to the vote, McCarthy argued that Schiff's censure was a reason why they shouldn't jump the gun on impeachment articles, according to The Hill.

"We do not want to jump the gun on an announcement but I think it is quite likely that it will be a significant investment in our relationship with India," he told reporters.

He was so eager to jump the gun that he whipped out classified documents for small potatoes political grievances.