The kicker faces competition from Giorgio Tavecchio, having had the lowest field-goal completion percentage of his career last season.
The 28-year-old told the Packers' official website: "Today it felt exactly how I wanted it to. I feel really good about where I am right now. Felt good about the set today, for sure.
"They got off my foot quick and got up, and they stayed on a good line. That's been my focus, pick a line, hit a good ball on that line, and don't let all the other elements affect that.
"It's helped me to, in a sense, focus in on what I need to do and how I need to go out and perform. I think the competition is always a positive. It's pushing me to do my best every day, every time I go out."
Crosby missed 21 of his 54 field-goal attempts in 2012.