Strange CVA rifle. CVA Blazer. Has nipple at end of barrell like inline. Had it in safe about 15 years never fired. Looks as is someone cut a stock out and mounted barrel in it. No breech to unscrew. Couldn't find any Elephant ffg that I used years ago. Bought some triple seven and loaded up 70 grains in old brass funnel I had had for years. Weighed on a scale 70 grains would fill this almost twice. Cleaned barrel really good. Got air blowing through nipple after boiling in water and soap. Uses #11 percussion caps. Took five caps to ignite powder and still felt like old flintlock with hesitation before discharging conical ball. I don't care for the triple 7. Grains too large to get in my old powder horn. You think I might need new nipple or real blackpowder. This isn't working this way. Flash ole was clean as I fired four caps off at a leaf just to see it move. Any help would be appreciated.