A few years back, I bought a box of Aguila .22 long rifle, along with a selection of other brands, to try out in a new rifle. I don't remember how the Aguila shot (or if I even fired any), because one of the 50 cartridges in the box looked like it had been grabbed with pliers & twisted out of shape. Kind of made me wonder about Aguila's quality control (was there any propellent in the cases, or primer compound?). Hopefully their QC has improved since then...
They say it has.
They say they purchased all new equipment, using the Ely priming system, over the last 5 years.