How long can WR sleep?
Since the water resistance of WR is accomplished by the quick swelling of the surface coating and barrier formation, it is helpful to understand the nature of this barrier. Initially, when the barrier is first formed from water penetration, it is about ¼ to ½ inch in thickness. It is soft in its texture and will hold back water from penetrating into the explosive column. However, the barrier continues to grow very slowly in thickness with time, in a process similar to osmosis. The initial rate of growth is about ½ inch per 24 hours, becoming slightly less in following days. Therefore, WR is designed to be loaded and shot on the same day. However, many shots have slept overnight, and even over the weekend, with excellent results. But the time factor should be kept in mind.
