i think i managed to pull another 8 R weapons at least (lost count) from the remaining pulls so out of my 1101 pulls in that day, i got around 120 R weapons...
probably is luck, but i never really had an issue of pulling skill level fodder anyway. some 10 pulls net me 3-5 R weapons in a go...
but getting some of the higher rarity enhancement materials is another story... i think i got roughly 10 of each SR type (weapon or eidolon) out of all that and getting stuff like the fangs, higher rarity idea cores, and stuff like half elixirs was even worse rates (i remember only getting 4 half elixirs out of that...).
at some point, i might just record an entire pull session and see what comes out... but clearing inventory will take a moment each time it fills up (i only have 150 weapon slots and 140 eidolon slots... might need more weapon slots soon if i start saving up some weapons i want to use or hold onto)