I can drink about a bottle of wine a day (12-13% alcohol). Before I was able to drink a half pint of voda and I believe on nights when I was out out, I was able to drink a little more than a half pint. Never gone up to a full fifth or more.
My tolerance has gone down now and I get hungry after one glass of wine and usually snack in between every glass. Still get up to a bottle but I believe my liver is getting weak.