Depends on your autopilot, I guess.
If I do that with our KFC 200, the GNS430 moves the needle on the HSI as appropriate, and the autopilot waggles us from side to side keeping the beambar kind of somewhere around the middle, because it only knows how we're doing by reference to the beambar. I can usually do much better in HDG mode by matching the track with the required bearing. The beambar stays centred.
With an autopilot with GPSS, the GNS430 tells the autopilot to turn until the track is the same as the required bearing. And then that pretty little display autoslews so you don't have to put down your coffee...