Yes, messy bedding is unsightly, but doesn’t always tell the tale to its effectiveness. A good way to tell if your bedding is a decent job: does the Barreled Action seem to fit like the stock is a glove? Does the stock “cradle” the Action? And when placed in the stock even without the screws, is it seemingly impossible to slide forward of backward any? Those are hallmarks of good Bedding.

Yeah, 1:9 is IMHO, the most versatile twist. For the typical length of a 160gr BTHP pill, the 1:9 is ideal. Your 1:10 may stabilize them “ok”, but yes, you likely will see better accuracy with the 140, or perhaps 150gr.