In SD we can only use open sights. My Triumph is sighted in, 2" high at 50 yds using 150 gr of 777 pellets and 250 gr shockwave bullet. The other day I shot a few rounds at 100 and didn't even hit the paper. Is it dropping that much or still on the way up? there was no one with me to watch and the boards were shot up I couldnt tell what was mine...