Percussion caps are the small metal caps that fire a sidelock muzzleloader or a cap-and-ball revolver. We carry #10, #11, #11 Magnum, and 4-wing musket caps from CCI, Remington, Winchester, and RWS, in packs that range from 100 caps to 1,000. Caps tend to sell quickly, so if the size you need is out, tap Email When Stock Available on its product page and we'll let you know when it's back.
Why the number on the tin isn't the whole story
Cap sizes aren't fully standardized from one brand to the next. Many shooters find that a Remington #10 fits more like another maker's #11, which is a big part of why Remington #10 caps are so hard to keep on the shelf. If you're switching brands, start with a small pack and test it on your nipple first. A good cap seats snugly with light thumb pressure and stays put when you tip the gun.
Standard or magnum #11?
Magnum #11 caps throw a hotter flash than standard #11s. Plenty of hunters choose them for cold mornings or for black powder substitutes, which some shooters find harder to light than real black powder. For most target shooting with true black powder, a standard #11 does the job. Either way, follow your gun maker's guidance on caps.
Musket caps for reproduction rifles
Reproduction Civil War era rifles and muskets, including Enfield and Springfield patterns, use the larger 4-wing musket cap. We stock them from CCI and RWS. The split wings fold down over the nipple and give you something to grip, which helps with cold fingers or gloves.
Built around the rest of your setup
Caps pair with powder from our black powder and substitutes selection and projectiles from round balls, bullets, and sabots. Loading tips and other small parts are in muzzleloading tools and accessories. If your rifle has a 209 breech plug instead of a nipple, you'll want 209 primers instead. Percussion caps ship as hazmat and can share one hazmat fee with substitutes and primers, while true black powder ships separately. Our shipping policy has the details.
