Blue Streak Ammo

I have a Blue Streak I bought new in 1964. Somewhere back in the '80's or early 90's it began to lose its ability to hold air after Dad used it many years to dispatch critters robbing his garden. He got a springer. I got the Sheridan when he passed and it sat around for a while.
Now I want to fix it up. I removed the stock and stripped off the factory finish. There is some really nice walnut that was hiding under that finish. I about have the stock and forend finished to my liking.
I will be sending it off soon for repair of the mechanicals. Probably to Baker Air Guns.
What pellets do you find useful in this rifle?