I think that the biggest difference has to do with the super soft lead the ARGs are made of, as I feel these will quickly foul the barrel, especially one with traditional rifling.
Ja mam propheta 2 performance i lufa RPB w 5.5mm i tam żadna gramatura ARG nie lata. Co do RPB to tylko 5.49,5.50,5.51 no 5.53 jest katastrofa i czy to będzie jsb,hn itp. Najlepsze skupienie na tej lufie uzyskałem na slug 217 (5.51) hn hp2 25 graina