No .303 ammo? What a surprise! Oh yeah, now I remember - aside from what was shot up by the military, any leftover stuff was wasted by us inconsiderate baby boomers. I can only speak for myself, of course. Reloading is definitely the way to go.
Cynicism aside, it is mind boggling to contemplate just how much surplus ammo has been fired off in the name of fun and games. Four of us shot approx. 800 rounds of 7.62 NATO in an hour. We had three FN's. that was in the good old days when 20 round mags were legal. One guy would load mags and three guys were shooting. Great times. Now, of course, we can't be trusted with FN rifles nor evil 20 round mags.