2X Gun: Riveting Air Pressures?

[txaviator]

I found the following information on Dan Checkoway's site, www.rvproject.com. This is very helpful information for the users of 3X guns.

AN426 Rivets:

Rivet Type Air Pressure Duration
AN426AD3-3 to 3-4 34 psi 1 second
AN426AD3-4.5 to 3-5 37 psi 1 ? seconds
AN426AD3-6 plus 40 psi 1? seconds
AN426AD4-4 to 4-5 45 psi 1 second
AN426AD4-6 to 4-9 50 psi 1 ? to 2 seconds

AN470 Rivets:

Rivet Type Air Pressure Duration
AN470AD4-4 to 4-5 60 psi 1 second
AN470AD4-6 to 4-7 60 psi 1 ? seconds
AN470AD4-8 to 4-9 75 psi 1 ? seconds
AN470AD4-9 plus 80 psi 1 ? to 2 seconds

I was just curious what the folks using 2X guns found to be their ideal air pressures? On the AN426 versions of rivets in particular. Thanks for any input.