A rifle is like a woman. The longer you work with them, the more comfortable you become with them. You learn their little nuances, and either adjust to them and have a winner, or get rid of them and get a new one. No rifle or woman is perfect, so you have to have reasonable expectations for both. Just the ramblings of lifelong shooter and 43 years of being with the same woman.
I've shot ok groups off a pillow. I know the paint roller rest is supposed to be the best for break barrels but I've yet to make one. I want to get some shooting sticks or a bipod or something that I'd actually take in the field and start using it.