Re: 204 twist rate
Everyone I know uses the 12" twist. I shoot the 39gr BlitzKing, and they work great with this twist (also the 40gr vmax). I think the 9" twist is for the heavier Berger bullets.
I can't say for certain, but I suspect that the 9" twist might spin those 32gr bullets apart when you load them around 4100 fps.
Don't bring Skittles to a gunfight.