A mistake I made when first starting to shoot trap/skeet was having prescription shooting glasses made with amber lenses and no bifocal. Impossible to see what I was doing with score sheet or work on my gun or dog if needed. Also, I didn't find the amber lenses at all helpful finding flying clay targets or birds. Great for road trips though, even on bright days (except the prescription wasn't quite right). I actually prefer to hunt with no tinting, if at all possible. But on very bright days, especially in snow, prescription sunglasses are necessary. Back when I was a young man a "soft pink" tint was available for those working in offices under flourescent lights. Great for hunting. Knocked the glare off snow without really changing the colors. Haven't seen that tint in years. Too hippie-ish I guess. I tried self-tinting photo-gray lenses back then. Hated them! Walk into a store or classroom from outside and can't see where I'm going. Oncoming truck won't dim his lights at night and as soon as he's past everything's almost dark in my headlights. Ugh!
I have never tried graduated bifocals but other shooters tell me to stick with lined type that distinctly segregates vision close and far, especially important if frames are current stylish skinny things. Many
high-end eyewear options make lined bifocals look sleek and modern while offering excellent clarity. Graduated bifocals apparently work well for computer screens and playing piano, but for hunting I want the bifocal out of the way as much as possible. Lined bifocals may look classic, and honestly, with the white hair and beard, it suits me just fine.
* I note with amusement the more recent fashion trend, especially among the gals, towards big black framed glasses. When I was in the US Army back in the early 70's these were military issue and we were required to wear them, at least through basic and AIT (advanced individual training). We called them "birth control glasses." The idea of basic training is to see how far DIs can humiliate recruits before they break. Making me wear those ugly poor-fitting things just about accomplished that objective.