They're customer service is hands down the best I've dealt with in a long time. When I ordered my choke tube and base, the woman I spoke with was incredibly helpful. She did exactly what was described above: walked me through pattern variations at different yardages. Once I received my choke and had a chance to pattern my gun, it exactly matched what she told me. To top all this off, William calls me later that afternoon to double check my order ("How dead do you want it?") and ask what color sticker I wanted.