Steve,
The chap from whom I purchased the Gehmann sold it because he didn't like the way it worked in Creedmoor. I've tried it, and it does work for me.
But, since you are going to use it in Hunter Pistol, Creedmoor isn't important anyway. I bought it for Standing & Field Pistol as I use Champions for Creedmoor. I have them set for that and didn't want to change the setting.
I find the Gehmann works well for me, has sufficient adjustment up & down, and reinstalls to the same place. (I am not aware of any promises of additional targets.) :roll:
Hope this helps!
Steve