Don't have pictures uploaded yet but tried out 4 different shells this past weekend, all with a SBE2 with modified choke. All shot's were taken at 30 yards on a 15 x 15 target (it was all we had at the time; I know...not the best to pattern on, but we made it work.)
Winchester Blind Side - Best pattern out of the 4 shells; the hex shot destroyed the target, with huge holes. Counted over 90 bb's on target with 3" #2's. Tested 4 shells, minimal gaps in the pattern, all shots would have been kill shots.
Remington Hypersonic - 2nd best pattern, one helluva kick to them. You can tell they pack more punch than your standard 3" shell. I have to wonder what the 3.5" would feel like. Good pattern, but had a few gaps. Still put 60-80 bb's on target, tried a few shells each with about the same result. It looked and felt like it shot a bit high each time.
Kent Fasteel - 3rd best pattern; not bad, not great. Heard great things with them from a lot of guys, just didn't see anythign spectacular on the pattern. Only tried 2 shells and each was decent.
BlackCloud - Only tried one shell just to check out the pattern, as I've had mixed thoughts in the past. I haven't had good luck with these shells so hate to be biased as I know some guys will only use these shells, but just didn't think it was as good as they claim to be. Holes in the pattern, could be considered a kill shot but I would use the three shells above before these. Sorry BC....you just don't get it done for me.
Couple things I noticed. We had some rubber tire around the outside of the paper we used to pattern. Every time we shot with the Blind Side, you could see the bb's embed themselves into the tire, completely, and sometimes just halfway in. With the other bb's they only put a small hole in the rubber, not passing completely through. Maybe this has something to do with the way they are shaped, and maybe said something about how they go into your kill - not certain. The Remington Hypersonic as I said before, always shot high, and had holes in the pattern. Each time we shot, the wad would go at least 20 yards and frayed out in 4 directions each time, you can tell they try to hold the bb's longer, not sure if it helps thought. I'll try to get some pictures up to show results.
Thoughts anyone?