Jimmy, I can't explain Travis' results as they differed from mine. Properly sighted in at 100 yards, my 25, 50 and 75yard targets are low where Travis shows high for his 100 meter zero. I just haven't had this happen.
Also, no one is going to shoot that precise with a red dot to be able to zero at 300 meters with a red dot on a blank silhouette. Most red dot groups from 100 yards run 3" or so.
The 25/300 zero is nothing new and has had plenty of problems for years, don't know why it's supposed to work now.
I'd suggest shooting all 3 and see which works for you.
