Annie Oakley laments in her letters that she was an abysmal shot with her LC and other guns when she arrived in England and attempted Brit pigeon shoots. It was only after Charles Lancaster (Thorne) built her a fine pair of guns and mentored her for months that she could do what hundreds of Brit competitors could. She was awestruck by the difficulty of British shoots compared to the American ones she was most familiar.
Brit shoots were different from what she was used to. New, expensive, custom, purpose-built guns, a qualified mentor, and lots of practice improved her performance. Shocking! I sometimes hunt with guys who regularly run 100 straight at skeet, but who can't match me in the dove fields. I don't shoot much skeet and they don't hunt very often. It's all about what you are used to and what you practice.