A little research into your local scrap paper markets will help you decide if the change will be cost effective when recycling revenues are considered. There still is no standard specification for copy paper. The ASTM D6 Paper Committee has labored for years to develop a standard specification for copy paper that includes paper with recycled content. You should exercise caution when referencing ASTM paper standards. While they may appear to allow recycled paper, the key recycled terms may mean very different materials than you expect.
All manufacturers test their paper to exacting specifications on a regular basis.
They do so for quality control reasons. Unpublished results from several companies show little difference between their recycled and virgin grades. During the past ten years, numerous jurisdictions and organizations conducted blind tests of recycled copy papers on their equipment. It did not jam or cause problems any more frequently than virgin counterparts. Today, even most equipment manufacturers agree that recycled paper works as well as non-recycled.