But the DND hasn't released military ammo to civilians for many years, haven't they? So there is no new supply of IVI ammo legally entering the civilian market.
I know there is still a pile of it floating around, perfectly legally, but even here on CGN they banned the sale/trade of IVI ammo and brass because of problems with current theft by soldiers/staff/contractors in the DND.
Most people I've talked to in the military complain about poor consistency with IVI ammo. Some lots are near match-grade while other lots are all over the map. No telling which one you'll get issued with. Personally if I wanted a pile of 5.56NATO ammo I'd go for the US Lake City/Federal stuff or PMC ammo from Korea. A lot easier to find and often cheaper than legal IVI ammo. Truth be told, if I want cheap, I'd go Russian steel-cased ammo. If I want accurate, I'm using handloads.