I've never tried the Berger, but the 34g FBHP MidWay DogTown bullets work really well in my CZ. Inexpensive, accurate and deadly seated out to barely fit in the Clip when pushed by 13.3g of Lil'Gun and about any small rifle primer. Drops ground hogs DRT with a boiler room hit out to 160 yards and a bit beyond. They pretty much go in one side and don't come out the other. Make a mush of what's in there.
Fitch