We discussed the Biathlon ammo a few years back.  In ordinary conditions (50 to 60 deg F) here on the left coast, the Fiocchi stuff shot just the same as Fiocchi standard velocity match stuff.  But it functions (shoots well) in cold weather when the regular stuff just does not work.

The Canadian guys say they use if for their winter shooting.  There is (somewhere) a forum used by biathlon skiers. I stumbled onto a thread where a competitor zeroed his rifle with something common (Fiocchi?) in Auburn, CA.  Then went to Aspen, Colorado for competition.  Could not get his Anschutz to hold a zero at Aspen elev & temp until someone gave him a box or 2 of Biathlon stuff.  That is what you buy.

re. Fiocci ................ (I believe)
The current score record is held by Laurie Gapko using Fiocci V 320.  I tried it in my CPA Shilen and it did not produce for me.  Go figure!
As we have said all along - each rifle (barrel) is different. Conditions are variable. I really believe - There are no absolutes. Just my opinion.