No. Not really. The comp really comes into play when you are pushing for major velocities. In minor or loads designed for steel, getting the load as soft & flat as possible will happen all on its own.
My current open gun is a Glock 17 and it has no comp, just a ported barrel. At 125 - 135 pf, it is plenty flat.
Ok good info. I guess i need to play with different loads.