Aline removing the nipple and putting small amounts of powder into the breech is the easy way to do that. I take a nipple pick and as I feed in the nipple hole, poke that pick into it and you will get more in there. It really does not take a lot to get a projectile out of the barrel.
Some words of caution, when you get ready to shoot the clearing charge; try and make sure there is no powder sticking to the threads when you screw the nipple back in, be sure and aim at something close to you so you can see whether the projectile actually does come out,and then check your barrel with your marked ram rod to make sure it did come out.
If the clearing charge did not push the projectile all the way out of the barrel, remove the nipple again and force more powder again into the breech. When you have 15 grains or so in there, be sure and "re-seat that projectile" back onto the powder charge. If you don't you can damage the barrel. Like Gordy said, it is hard to pull a projectile. Thank goodness it has never happened to me.
I have a rule, if I have any doubt about whether I put powder down the barrel, before I will seat the projectile, I will dump a charge on the ground. I have dumped a lot of powder, believe me.... :redface:
As for your experience with that range officer, it is his job to make sure your safe yes.. but he is not there to lecture on the workings of a muzzleloader. It sounds like you ran into one that was taking pleasure in how important he was. That is a shame. He had a perfect oppertunity to help you and laugh it off. You already knew what you did wrong. He did not have to rub your nose in it... Just remember, no one is perfect. Forgive him for his attitude... ::