Below I've posted a link to another forum where there is a discussion regarding the source of the powders we use, current production, and possible future issues with production.

Lot's of interesting information for US manufacturer (Ball powders only) and why extruded is not made stateside, where others are made, and possible future issues with manufacture of propellants from an EPA (or European counterpart) EC REACH programme standpoint.

Long story short, lot's of hazardous chemicals used in manufacture of propellants and where possible, less hazardous methods will be employed eventually, and that of course will change the characteristics of the individual powder and no doubt cause some to become obsolete.

Anyway, good information.

With apologies for posting a link to the competition;
http://forum.accurateshooter.com/thr...he-us.3901810/