over the past month or so ive been trying various subsonic ammo out on the range... ive been using winnies since i bought my rifle but i have a 40 mile round trip to buy em!!!so i decided to try some makes the local shops sell, i started with rws hp subs!!! not a bad round,very quiet but did'nt group as well as winnies!! did'nt even bother with cci's tried remmington subs,lol it spatt em all over... then i tried eley hp subs,i fired about 8 shots pretty tight group then crack,a flyer even the lad on the next fireing point heard it... so i carried on and out of 100 rounds i had about 6-7 flyer'