Muzzleloaders REQUIRE pure lead! It's getting harder and harder to find the stuff! It sounds to me like your lead and/or your mould are not getting hot enough, if you are getting wrinkles and bullets that aren't filled out completely. If your lead gets "too hot", the bullets will take on a frosty appearance. BUT THEY WILL FILL OUT PROPERLY!! A frosty, well-formed bullet is shootable.



The bigger the bullet, the more difficult it becomes to cast good ones. The worst problem comes from air bubbles inside the casting that you can't see, but which unbalance the bullet. Leave the dipper pouring spout attached to the mould for about five seconds or a little more when pouring. This helps eliminate the internal voids.