if your rifle is a Mag. gun , then 3 pellets are OK.if it does not say Mag. on the barrel then, don't go over 2 pellets.
if your 2 pellets and the bullet you are using does a good job , then stick with it.
you can get other size pellets and try them to get a better set up.I have saw 35 gr. pellets.just a though.
when I go up to 3 pellets , my accuracy goes to pot.so I stick to the 2 pellet charge.
durning the off season is the time to play with the charge and projectiles. have fun , and be careful.