Can you use them? Yes Without damage, just a guess here but a 10g pellet in .22 does seem a bit light to say the least. Also I cant see them being very accurate unless fired froma very low powered airgn, maybe a 2240 crosman on Co2.
I wouldn't risk it unless its a very light springer or a PCP . But usually the ultra light pellets aren't that accurate... You never hear about the Gamo light pellets striking matches ....or hitting an oil can lol