Can someone give me the pellet weights for Air Arms Field 4.52 & RWS Superdomes .177 as I now have my Combro & will want to give it a try in the next day or so. Also the .22 Air Arms in the 5.52 size (I think they are). If anyone has a list I could print off that would be even better. Also is it ok to use the Combro on a spring rifle including SR's.Many Thanks.