jack wrote:

Finishing my basement, putting up stud walls. I am building the walls
in-place.
When using an air gun, how many nails do I use to toenail the studs. I have
read it is two for the top and two for the bottom.

http://www.mcvicker.com/resguide/page014.htm
has a nailing scedule for most normal things.

Since you're toenailing, and not end-nailing through the plate,
it wants you to put 4 8d nails at each end, two on either side.