A misfire happens when you press the trigger, the firing system tries to ignite the cartridge, and the round does not fire. The safest response is not to rush, not to look into the action, and not to assume the round is harmless. Keep the muzzle pointed in a safe direction, keep your finger off the trigger, follow your range or firearm manual procedure, and treat the event as a possible delayed ignition until it is cleared safely.
Misfires are usually caused by ammunition, firearm condition, or the firearm not being fully in battery. This guide explains the difference between a misfire, hang fire, and squib load, what to do in the moment, and how to reduce the chance of it happening again without giving risky shortcut advice.
Table of Contents
What Is a Misfire?
A misfire is a failure to fire. In a typical centerfire or rimfire firearm, the trigger is pressed, the firing pin or striker hits the primer or rim, but the cartridge does not ignite. You may hear a click, feel the trigger break, and see no shot fired.
The important safety point is uncertainty. In the first moment after a click, you do not know whether the cartridge is truly dead, whether ignition is delayed, or whether another malfunction has occurred. That is why the basic response starts with muzzle control and patience, not immediate inspection.
The NSSF firearm safety rules are a useful foundation here: always keep the muzzle pointed in a safe direction and keep your finger off the trigger until you are ready to shoot. Those rules matter even more when the firearm does something unexpected.
Misfire vs. Hang Fire vs. Squib Load
People often use these terms together, but they are not the same problem. Knowing the difference helps you respond with the right level of caution.
Misfire
A misfire means the cartridge does not fire when struck. The cause may be a bad primer, damaged ammunition, light firing-pin strike, dirty firing-pin channel, weak spring, or a firearm that was not fully closed or locked.
Hang Fire
A hang fire is delayed ignition. The trigger is pressed, nothing happens immediately, and then the round may fire after a delay. Because a hang fire can look like a misfire at first, do not open the action instantly after a click. Follow your range rules, instructor guidance, and firearm manual.
Squib Load
A squib load is different because the round may fire weakly and leave a bullet or obstruction in the barrel. Warning signs can include an unusually quiet report, light recoil, smoke, or a shot that feels wrong. If you suspect a squib, stop shooting immediately and have the firearm inspected before firing again.
What To Do After a Misfire
If the firearm clicks instead of firing, keep the muzzle pointed downrange or in another safe direction. Keep your finger away from the trigger. Do not turn the firearm sideways to look into the chamber, and do not point it toward yourself or another person while trying to diagnose the problem.
Many range procedures use a short waiting period before clearing the firearm because of the possibility of a hang fire. Your firearm manual, range officer, instructor, or club rules should control the exact procedure. When in doubt, slow down and ask for qualified help.
After the waiting period required by your setting, open the action carefully while maintaining safe muzzle direction. Remove the cartridge if it can be removed safely. Keep the suspect cartridge separate, do not try to fire it again, and follow local range or manufacturer guidance for disposal.
If the firearm does not open normally, the cartridge is stuck, the bolt or slide feels jammed, or you are unsure what happened, stop. Forcing parts can make the situation worse. Let a qualified range officer, instructor, gunsmith, or manufacturer support channel guide the next step.
Common Causes of Misfires
Most misfires come from one of three areas: ammunition, firearm condition, or handling/setup. The cause is not always obvious from a quick glance, so avoid guessing if the malfunction repeats.
Ammunition Problems
Old, wet, corroded, contaminated, or damaged ammunition can fail to ignite. Ammunition stored in high humidity, extreme heat, vehicle trunks, damp hunting bags, or unsealed boxes may become less reliable over time. A primer that is damaged, improperly seated, or defective can also fail even when the firearm is functioning normally.
Use ammunition that matches the firearm marking and manual, and inspect cartridges before loading. If a round looks swollen, corroded, cracked, dented, or contaminated with oil or solvent, do not use it.
Firearm Condition
A dirty firing-pin channel, worn spring, damaged firing pin, heavy fouling, or neglected action can reduce ignition reliability. Cold weather, rain, dust, and heavy lubricant can also affect function, especially if the firearm has not been cleaned and inspected after use.
For technical ammunition and firearm safety context, SAAMI firearm safety information is a strong reference because it focuses on safe ammunition/firearm matching and handling principles.
Not Fully in Battery
Some firearms may not fire correctly if the bolt, slide, or action is not fully closed. This can happen from riding the slide, dirt in the chamber, damaged magazines, improper loading, or mechanical wear. If a firearm repeatedly fails to go fully into battery, stop using it until the cause is identified.
How To Prevent Misfires
You cannot prevent every defective cartridge, but you can reduce avoidable misfires with better storage, inspection, and maintenance habits.
- Use the correct ammunition. Match caliber/gauge and cartridge type to the firearm manual and barrel markings.
- Inspect before loading. Avoid cartridges with corrosion, dents, cracked cases, loose bullets, or moisture damage.
- Store ammunition properly. Keep it cool, dry, stable, and away from oils, solvents, and long-term humidity.
- Clean on a schedule that fits use. Range sessions, hunting in rain, dusty travel, and defensive-practice training all justify inspection and cleaning afterward.
- Follow the manual. Maintenance points, lubrication amount, replacement intervals, and approved ammunition vary by firearm.
- Stop repeated malfunctions early. If more than one misfire occurs with the same firearm or ammunition lot, pause and investigate before continuing.
Safe storage also matters beyond misfire prevention. Project ChildSafe has practical secure-storage resources for keeping firearms inaccessible to unauthorized users, especially children. Reliable equipment and responsible access control belong together.
When To Stop and Get Help
Stop shooting and get qualified help if the firearm will not open normally, the cartridge is stuck, the action feels damaged, the report sounded weak, the bore may be obstructed, or the same problem happens again. Do not keep firing to “test it out.†A repeated misfire can point to a mechanical issue, ammunition lot issue, or unsafe condition that needs inspection.
For beginners, the safest help source is a certified instructor, range officer, gunsmith, firearm manufacturer, or the official firearm manual. Online advice can help you understand terms, but it should not replace qualified inspection when a live-round malfunction or possible barrel obstruction is involved.
FAQ
Can a misfired round go off later?
It is possible for a delayed ignition, called a hang fire, to look like a misfire at first. That is why you should keep the firearm pointed in a safe direction and follow your range or firearm-manual procedure before opening the action.
Should I try to fire the same round again?
No. Treat the cartridge as suspect. Keep it separate and follow range, manufacturer, or local disposal guidance instead of trying to fire it again.
Is a misfire always caused by bad ammunition?
No. Ammunition is one common cause, but a weak firing-pin strike, dirty action, worn part, or firearm not being fully in battery can also cause a misfire.
What is the most dangerous mistake after a misfire?
The biggest mistake is moving the muzzle in an unsafe direction or immediately opening the action while assuming nothing can happen. Keep the muzzle safe first, then clear the firearm according to proper procedure.
When should a gunsmith inspect the firearm?
Use a qualified gunsmith or manufacturer support if misfires repeat, the action feels abnormal, parts appear worn or damaged, the bore may be obstructed, or you cannot confidently identify the cause.
Final Takeaway
A misfire is not just a failed shot. It is a safety event. Keep the muzzle pointed safely, wait and clear the firearm according to proper procedure, separate the suspect cartridge, and investigate the cause before continuing. Good ammunition storage, regular maintenance, and manual-first habits reduce risk without encouraging shortcuts.
