If this passes, every gun store in the country is in deep doodoo. The RPALs might be only 4% of all PALs, but I don't think the average hunter owns 10+ guns and buys ammos by the case. Lots of hunters will shoot 1-3 rounds per year. A good afternoon at the range is >1000 rounds.
If this thing passes, the industry will be decimated. Period.