Surplus ammo is hard to find; some Pakistani stuff is still available but it's corrosive.
Sellier & Bellot and Wolf Gold make target ammo that's not hideously expensive (but it ain't cheap); all the usual suspects make expensive hunting ammo.
If you choose to reload, watch for berdan primers even in brass milsurp cases. Remember that it uses a .311 inch bullet, not .308. Hornady and Sierra both make good boat-tailed 174gr target bullets, as well as hunting bullets.
I like Enfields. I liked them better when cheap surplus ammo was available.
Small price break for 10 boxes of 20 each.