4350 is starting to show up again. I'd go shooting this weekend with what you have, but I wouldn't put much effort in the other powders, myself.

Depending on the barrel, you should see 2850 or so with 142's and 100fps faster with 123's using 4350.

I got a stupidly slow barrel last time, and my velocities are about 100fps slower than normal. Luck of the draw.