Just keep shooting. And verify the .25" groups.
I really like the Great Plains Conical's. They are dished on the bottom and although some folks don't, I still use a wonderwad with excellent results.
It's on my to do to get some No Excuse Conical's to try out. Cayugad has shot a bunch and has great feedback on them.
T/C Maxi-Hunter or Maxi-Ball's are not too shabby either.