Bigcountry- I did what you are thinking about doing about 5 years ago. My insurance allows for me to get new lenses every year and new frames and lenses every other year. One year I bought the biggest set of frames I could find and had them fittted with polycarbonate lenses. My wife calls them my 'geek glasses' but I pretty much wear them only when I'm shooting my rifles or compound bows. The reason I got big frames is because most of the trendier glasses that are commonly worn have lenses that are fairly narrow in height which means you will end up looking over the top of them or at the very edge of the lenses where they are blurry or distorted when trying to shoot with them. These glasses saved my eyes once, when I had a casehead failure in a 9mm I was shooting and got a big stream of hot gasses, burning powder and bits of brass blown in my face. I always wear these for reloading also, but I might have to upgrade to bifocals soon because my closeup vision is starting to go bad too.