Unclenick
On my H110 powder container is says Maximum loads-Do not exceed-reduce by 3% to start. I have stuck bullets in the barrel by reducing slow powder (which at that time was a listed load – before the warnings not to reduce by more than 3%). I believe the powder I was using was 296 but since then I have always only reduced slow powders by no more than 3% and have never had stuck bullets since. Here is a link to Hodgdon -
http://www.hodgdon.com/data/pistol/index.php