That's the stuff that was available by the pallet here in Oz in the early / mid 1970's. Superb ammo with top-grade cases. Berdan primed (.217" eg. RWS 5608 / 5627 / Vihtavoury Kemira .217") NON mercuric. I still have a few rounds and a small plastic bucket of fired cases here.
Also available in packets with a pink label and red-tipped projectiles, for entertainment after dark.
We used to pull those painted bullets and replace them with a locally-made soft-point for hunting. The tracers mostly didn't trace, which would be one more reason for their being "surplussed".
FN, Belgian, hence the bilingual label, intended for machine-guns, specifically as labeled, the BREN.
I recall that it sold retail for less than ten Oz cents per round at the time.