My advice would be to find the pellet that shoots best in you gun, practise with that chosen pellet and go get them crows.
I don't think the crows will mind if it's a Accupell , daystate, airarms or bisley pellets.
As long as they shoot straight and your rifle skills are up for it then almost any pellet will do the job.
If you have never shot crows before I would recommend you ask advice as they are crafty buggers and not that easy to shoot.
Good luck.
