Regulis7,
I shot a box (50) of ball-ets, but didn't get good accuracy. My rifle (which also has a 1:48 twist) seems to like PRB better than ball-ets.
Some people report good results with the Buffalo ball-ets, though. Give them a try. It might work for you.
Another option would be the Hornady PA conical. It's a short conical very similar to the Buffalo ball-et. I've never shot them, but think they run for about $7 per box (50) at stores like Gander Mountain and the like.
Buffalo bullets are a bit more expensive, at about $10 per box of 50.
If you cast, you could try some Lee REAL bullets. Lee molds are inexpensive. If you don't cast, there are on-line sources for cast REAL bullets and Maxiballs at reasonable prices.