After researching and looking at bags I have a question it's hard to find a 0 degree synthetic bag. But 20 degree are plentiful. I will be using a big Agnes q core pad. If I wear a thermal layer inside bag will a 20 degree bag be sufficient
do you sleep on the cold side or the warm side?
most EN ratings already include midweight thermals; obviously adding a puffy jacket (and even pants) along w/ booties and a warm hat/balaclava will push the bag further
having said that, if you are going to err, I would err a little on the cautious side on what temp rating to go with
see if there is a snotel site near where you are hunting (and close to the same elevation) and you can get a good idea of what temps to expect
