Seattle's mild winters and cool summers enable year-round outdoor activities. High temperatures in July average about 75 F (24 C), while low temperatures in winter drop below freezing an average of only 15 days per year. Seattle averages 158 days of measurable rain and 226 days of some cloud cover per year. Both most often occur in the winter and during the night. Seattle is in the direct path of the highly unstable Puget Sound Convergence Zone which makes local weather forecasting as much an art as a science.
Cold rolled steel is much more preferred in the machining world where the quality of the steel is an important factor of the quality of the final product, and the appearance of the steel is also an important factor.
This. If you really want to get pats on the back from Real World Operators, get a stainless barrel that has been Cold Hammer Forged :chris: http://palmettostatearmory.com/index.php/ar-15-05/upper-parts/barrels/psa-20-5-56-nato-hammer-forged-stainless-steel-heavy-profile-barrel.html.