Can't believe you didn't do your homework and come up with a better bullet/powder combo for this year. I can't understand why you still go with 150 grs of pellets. This is obviously too much powder for this bullet. I howeverr have only shot up to about 95 grs in my gun. Everytime I go higher, my groups really get bad. I on the other hand am having a hard time grouping the 295 gr. powerbelts using any powder combinations. They will shoot all over the place in my NEF Sidekick. Now I shoot a saboted 300 gr STP and it is deadly in my gun.