I notice that match pellets for pistols tend to hover in the 7 grain sort of area, but for rifles in the 8 grain area.

I know most people use pcps these days and don't need to worry about pellet weight, but I wondered what the general view on pellet weight for springers was.

I've got an FWB300s, Original 75 and a Walther LGV, and I've been using RWS R10 pellets in them. They're a little bit over 8 grns.

Would putting lighter pellets like Hobbies or JSB RS through these rifles be problematic over the long term? Would there be any possibility of damage on spring piston guns - to the springs or seals?

I also have a FWB80 pistol in which I also use R10 pellets - the lighter ones. Could putting heavier pellets in it create problems for the spring or piston seal?

I would be grateful for your advice.