Other 30-40 grain slugs, what are shooting?

I'm shooting my 30 gr cast noe bob boat tail that I cast out of a MK2 impact at around 915 fps. They seem to be very accurate but don't have a lot of rounds fired yet. They were very accurate out of my.22 liberty but I had to size them down so much and ended up with too much friction in it's tight barrel. By the way, the liberty has the same barrel as the avenger.