I use the Tedd Cash oval capper in brass. Yes, the caps rattle, but you can't hear them more than a couple of feet away. Its basically copper bumping against brass, and the sound made is just not pitched high enough to carry very far.
Its actually more of a dull, muffled, ticking sound. You have to shake it holding it between your thumb and forefinger, next to your ear, to hear the sound you might describe as a " rattle". When its in your hunting pouch, or pocket, you cannot hear the rattling at all.
{Secret TIP: If you fill the capper FULL of caps, you reduce the Rattling to near ZERO. There simply is no place for the caps to move to "rattle".} :hmm: :surrender: :hatsoff:
You will get more Sound putting the cap on the nipple with nervous fingers, than you get from any rattling of caps in a capper.
The layered leather cappers, described above, work with both #11 caps, and with those " MUSKET" caps that are being discussed. Musket caps don't produce any hotter flame, or more flame than does a standard #11 cap. Musket caps do cost more, however, and generally require a different nipple to hold them in place on your gun. Yes, they can be fired using a standard nipple, but the musket cap sits loose on the nipple.
For Safety Sakes, I prefer NOT to load caps on nipples holding a cap in my bare fingers.
:hmm: