The commercial tin based "green" pellets are readily available online (Pyramyd, Trenier, AoA, Midway). They're not available at my local Big5 Sporting Goods, even in this eco-green-no-hazmat Bay Area. In .22 they run from 10 to 13 grains, and in .25 from 16.5 to 20 grain, roughly only 2/3 the...