Pure shooting guards in the nba, what % of 3's do they make during practice?

The highest percentage possible, If you're around 50% during practice with no defense, you can't expect to shoot anywhere near 50% if you are being defended. You need to be a pretty good shooter who can shoot 9/10 3-pointers, then in a game, maybe you can shoot around 40% while being defended. You don't really have a certain percentage during practice, but you need to be efficient. Anyway, what's 90% 3-point shooting in practice if you shoot just 25% in game right? So shooting guards and any player of any position must make every shot possible during practice and during a game. Period.