I have got a brocock PCP pistol and although it is fun the trigger is nowhere as good as a good target pistol. Try it get a second hand grip for your morini and then hack it around until it works as a two handed grip as you will be disappointed otherwise.
Failing that the CP1 pistol grip is not too bad and with a little very easy work the trigger can be made ok. You can get them from Poland for about £70 shipped