Are you talking about tests for accuracy or on game???

I read several articles about them in the late 90s when they came out...One I recall was the new Knight Disc, using 3-50gr pellets and a 150gr Barnes...

I shot them for several years in my Knight Disc with 100grs of Pyrodex, killed around 8 deer
with them...They would group within an inch and a half at 100 yards, always had full penetration
on deer and good blood trails...