Where did you hit them, was the shot slightly high? If so the body cavity has to fill up with blood before it will reach the ground.

I use 110gr. 777 3F powder with a 200gr. Shockwave in a Harvester Crush Rib sabot in my Triumph. So far I have been very pleased with this combination, shoots very tight groups and performs well on deer. I tried the standard sabots that come with the 200gr. Shockwaves, but they loaded to hard for my taste. Swithed to the CR and they load so much easier now.