Tohopko,
No, I've not tried any 140gr bullets. I've developed loads for both the Barnes 127 LRX, and the Nosler Accubond 130 gr. Both loads are shooting .5 MOA plus or minus out of my Cooper Timberline. I found accuracy nodes with the 130 AB at 53.7 and 54.2 grs. Velocity is right around 3100 FPS, measured with my Magneto Speed chronograph. Accuracy nodes with the 127 LRX are 52.8 and 53.7 gr. Again, right around 3100 FPS. ES is single digits to low teens for 5 shot groups. The more I work with RE 23, the more I like it. One of the most impressive characteristics is the "anti-copper fouling" component. I thought this was marketing hype, but it really works. After shooting 15 or 20 rounds with either the Barnes or Noslers at 3100 FPS, there is barely any visible signs of copper fouling in my bore. Cleaning the barrel is a snap. I'm also working on Barnes 150 gr TTSX loads for my 30-06 AI, with RE16. It has the same anti-copper composition. I'm getting the same type of results. No copper fouling, high velocities with no pressure signs, and very good accuracy. I think Alliant has hit a home run with these powders.