Last month I sighted the Horn SST's in my 870 special purpose.
I was very impressed with groups.Recoil wasn't as bad as I was told it would be BUT it did get my attention.

I'm going to load em up for Deer this Sat.Anxious to see performance on Deer. I'm told Hornady will/might introduce a 20g SST this yr? If so I'll be trying them in my 20g H&R.