Last month I decided to blend some Peretti tobaccos, 2 parts Royal English / 2 parts Tashkent / 1 part Oriental #40 and let it sit for 30 days in a mason jar. It turned out great! The result is a creamy, almost buttery smoke.
As noted in a different thread, it's a good thing you paid attention to the measurements. I have a blend that I wanted to get the ingredients for a friend that loved it, but I never wrote anything down.