Hawke precision steel mounts are good, as are Konus steel rings which are identical to the Hawke, I use the picatinny versions whenever possible.

I am however slightly baffled as to why, if a medium mount gives you correct head position on other rifles, you suddenly want low mounts on this one ?

The mount hight you need is dictated by where your natural hold position puts your eye, not what the objective bell size lets you use, or what "looks nice" in profile.