Wapitibob, don't give up on it! It is talking to you, but you have to translate it. IMHO, the RL25 is too slow for the 140 bullet. I have by far had far more luck with RL22,or 7828 with 140-145-150 bullets. And oh yeah, barrels do get warm quick with 22, especially this time of year. If I had to seltle on one powder, it would probably be RL22. I have shot all bullet weights with it, but it really shines with the bullet weight you are shooting now. And as was said by another, 7828 is a great choice too. You could be onto some thing with the lead sled thing! It does change the harmonics, versus when the gun is shouldered, or bagged. Save the RL 25 for the heavy weights would be my recommendation. I would like to recommend the 140 TSX. My Sako absoleutely loves those things. My #1 sendero STW loves 140 CT bullets. FWIW, my all time favorite 140 load is, 79.3-RL22-140 CT, BT, TSX. Federal 215, @ 3.670 for Remingtons, and 3.701 for Sako. You can duplicate that load with 7828. The latter, is a tad slower, but it has worked for me. Good luck, and feel free to ask for advice.