the sale ad reads "POF 30-06 150gn fmj m2 ball"

hows this ammo?? they call it m2 so i assume it should be safe to shoot in the garand. how the accuracy? they claim non corrosive?? its not reloadable and its a few $$$ cheaper than the greek hxp from cmp, for the price difference, all other things being equal, im happy saving $20/100 on the berdan brass.