all right i have the 1077 and i bought the
Predator Pellets
Premium Hunting Pellet
but they dont fit in the magizine. would it be posible to put a little cut in the magizine all the way around just anough so that the pellet would fit

Before modifying the magazine- you should verify the pellets will fit through the barrel- otherwise you'll render the magazine useless for other pellets and still not have solved the issue. Some pellets work better in one gun vs. another. I have no experience with the ones you're trying in the 1077- but it may just not be a good pellet for this gun.