Has anyone tried the 36gr Barnes Varmint grenades for the .22 hornet? I've been given a box to try and cant seem to get the thing to shoot accurately at all , would properly be more accurate throwing them .... lol

Im using 11grs H110 powder ,tried seating that the length the magazine would allow me to feed (CZ527) , maybe would get better accuracy just slightly off the lands? any advice would be greatly appreciated