I shot them. Very goodGood prices. I also just learned that Harvester now has a Crush Rib sabot (yellow) designed for boat tail bullets -
50 Cal Crushed Rib Sabot for .451 Cal Boattail Bullet - Pack Qty: 50
I want to pick up some of these and try them out as the Barnes TMZ's with the standard yellow sabot are just too darned hard to seat in my T/C Pro Hunter which has a little tighter bore diameter.