I would try the 125SST. They seem to be a good bullet,, comparing them to the 120 gr SST for the 6.8SPC. They work good on deer and hogs.

The 110 is designed for varmints and may not perform quite as well.

I do believe that I would be inclined to contact Hornady and check to see at what velocity the 120SST will operate at.
(meaning lowest velocity)