I have a Argentine rifle and couple of Argentine Engineer Carbines. They're sweet rifles! The 'commercial' style inside guard floorplate release have caused many to become donor actions. If the rifle is nice, a definite 'collector ouch!'. But... life! Brazilians of same quality but less "sporterization targeted in 'afterlife" as without the Argie magazine feature. Of course the 7mm of Brazil definitely preferable! I also like the classic architecture of straight grip stock!
I'm not a handloader and that always a consideration in what I considered "exotic ammo". If not commercially available or surplus in my city, I evaluated more as collector or something of special appeal. In retrospect, I've avoided some great guns for cause of 'chambering'. Laments but in reflection of 'more than my share of nice guns coming my way!
Best!
John