Joseph:
I don't know anyone who shoots 1000K that has their rifle zeroed at 100. By the looks of it 216 may not be quite right, but with a 300 of 400 yard zero it could be done a bit easier.
Mine does have a 200 yd. zero and it does have a 20 MOA Picatinny rail.
Here is the target which is the second time I shot in competition at 1,000 yds. The scores & group sizes are in the lower right of the target. All 15 shots would have hit the boiler room of an antelope.
The winning groups were down in the 6" sizes. My smallest was 8+1/8th." I think I had high score on the 46 pts. out of a possible 50 pts.
joseph
PS: Here is what I said: "With my scope (Vortex PST FFP 6-24x50mm) with 1/4" clicks it takes me 108 clicks to get from 200 yds. to 1,000 yds. With 1/8" clicks I would have to count 216 clicks to get to 1,000 yds.