[DJ Hellfire]

Swing is measured in percentage, not grid resolution. So what you are asking has nothing to do with the grid line placement. The grid lines are precisely placed according to BPM, which is the view your timeline should be in when composing. You can set the grid lines to samples, and time as well, but like I said, Bars and Beats is what it should be on when composing. The only way to change the grid line spacing is to change the session tempo, which does nothing for your swing.

So like filo said, what you want to do is quantize your drums and maybe select an MPC type of swing of maybe 55-63% set to 1/16th notes. Otherwise you will have to either try to get your desired timing feel during your recording performance, or separate each drum hit and manually nudge them to the feel you want!