Erwan
50 Cal.
Pure saltpetre (KNO³), you can get it here as food additive : https://www.amazon.com/HUMCO-263794...ild=1&keywords=salpeter&qid=1586377763&sr=8-1What are you using to nitrate the paper. Potassium nitrate,saltpetre? Is there an alternative that might help a flash. I crack my paper when putting in cylinder but wonder about nitrating,.any help here?