Up to 11 lbs permitted (not exceeding .75 caliber)
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What types of boxes are permitted for small arms ammunition?
Small-arms ammunition for personal use may be transported aboard commercial aircraft in checked baggage only. Ammunition must be securely packed in fiber, wood, or metal boxes, or other packaging specifically designed to carry small amounts of ammunition. The original retail package is acceptable if the ammunition is held in place and completely covered. Ammo clips and magazines must also be securely boxed.
May I pack my ammunition in a clip or a speed loader?
Yes, as long as the magazine or clip completely and securely encloses the ammunition (e.g., by securely covering the portions of the magazine where the ammunition is exposed with a metal, plastic, or cardboard sleeve).
How much ammunition may I carry?
US DOT regulations do not limit the total number of packages or the total weight that may be transported in checked baggage; however, the ammunition must be for "personal use." Many air carriers limit the amount of small arms ammunition that may be carried in checked baggage to 11 lbs., (5 kg) consistent with international standards. When in doubt, check with your air carrier.
May I carry ammunition components?
You may carry separate non-hazardous components of ammunition such as empty cartridge cases or inert bullets. Separate hazardous components such as black powder, smokeless powder, percussion caps, primers, wrapped charges used in muzzle-loading applications, or similar items are prohibited.