NDHunter:
A lot of that depends on your personal internal furnace. It was a little too warm for me on this most recent trip and I was wishing that I had taken my WM Alpinlite, which is rated at 20°F. I spent most of the time with it unzipped and laying on top of me like a quilt.
The WM Antelope is rated at 5°F and WM ratings are more accurate than some manufacturers. I use my WM Antelope on backpack elk hunts, in the Colorado Mountains, during the 3rd rifle season, first week of November.
I use a warmer bag December thru February.
KC
