Try FFFF black 777 is the hardest of all the powders to get good ignition get 10 or 15 gr of FFFF black will pop it right out shoot it right away dont give it a chance to get damp. The other good way is with a CO2 dis charger I carry one in my range box [a TC] but I am sure there are several brands available I just have not needed to try any of them. Lee