DNZ lists their low height as being 1" high to center-line, meaning you can go up to a max 2" diameter objective. Talley lists their low as .565" base height, so adding 1/2 the 1" tube diameter, it would be 1.065" to center-line allowing up to a 2.13" max objective diameter.
Cabelas list their current 3-9x40mm muzzleloading scope as having a 1.85" objective bell diameter so you are good to go with either mount in low height.
