I rate L2A2 as medicore surplus 7.62mm NATO ammo, nothing special. Of course I rate all surplus 7.62mm NATO ammo as medicore!
Last lot I tested was to NATO spec, but no more accurate than anything else and had twice the velocity fluxuation (standard deviation) of Chilean ammo I bought for $99/1000. (Was still within M80 Ball spec though.)
The only surplus 7.62mm I've tested that didn't meet M80 Ball specs for velocity range was the M963 Portugese, but accuracy out to 200 meters didn't suffer for it.
I pretty much buy this stuff by price these days as it's all about the same with nothing wildly different. All shoots well in my M14 and 7.62mm NATO T26E1 (Garand tanker).
-- Chuck