Firearms

Shotgun Know-How: What Might Cause a Shotgun to Explode?

Close-up of a hunter holding a shotgun against his chest, what might cause a firearm to explode concept.

Understanding the potential dangers of improper shotgun use is crucial for every hunter. Safety isn't just about avoiding accidents – it's about respecting the power of your firearm and ensuring that every shot is taken with the utmost care.

So, what are the dangers of using a shotgun the wrong way, either while practicing your shooting skills or while in the field for a hunt? Today, we talk about what might cause a shotgun to explode and how to avoid it to keep everyone safe in the field.

Close-up of a hunter aiming a shotgun, causes of shotgun explosion concept.

What are the Common Causes of Shotgun Explosions?

First, let's look at how it could happen in the first place. Potential causes of a shotgun explosion fall into five different categories: barrel obstructions, ammunition issues, improper maintenance, mechanical failures, and environmental issues.

1. Barrel Obstructions

Anything in the barrel of your shotgun that isn't supposed to be there could cause an explosion when you pull the trigger.

Debris Blockage

Imagine you're in the woods, chasing critters, when a tiny bit of dirt or a forgotten cleaning patch jams up your shotgun's barrel. This debris can create a deadly blockage, making your hunt hazardous.

Always check your barrel before and after each use to ensure it's clear.

Snow or Ice

Hunting in snowy conditions adds an extra layer of risk. If your barrel dips into the snow, it can pack in ice or snow, causing a blockage.

Always inspect your shotgun after any fall or if you've been moving through deep snow. Shotguns are generally much easier to deal with than rifles in these cases. A shotgun barrel can generally be removed to clean, and it's usually a bigger overall diameter to work with than a quarter-inch or smaller diameter rifle barrel. 

Close-up of a hunter holding an open box of shotgun shells, use the right ammo to avoid shotgun explosion concept.

2. Ammunition Issues

It's not as simple as grabbing a shotgun shell and loading it into the shotgun. There's plenty of room for error that could lead to an explosion if you're not careful.

Wrong Ammunition Size

Using the wrong size cartridges is a common mistake that can have catastrophic consequences.

Mismatched ammunition can cause excessive pressure build-up, leading to an explosion. Double-check your ammunition to ensure it matches your shotgun's specifications.

Shotgun shells come in length. The lengths your gun is meant to take are generally written on the gun barrel. Usually, a weapon that can take a Magnum shell (longer) will take the shorter standard load with no issues. 

Damaged Shells

Dented, cracked, or improperly reloaded shells are accidents waiting to happen. Even a minor imperfection can cause malfunctions or explosions. Inspect each shell before loading it into your shotgun.

Overloaded Ammunition

Hand-loading ammunition can be rewarding, but following precise guidelines is essential. Overloading excessive powder can increase internal pressure beyond safe limits, risking an explosion.

Stick to recommended loads and consult the owner's manual, your gun, and all the writing on shells and shell boxes to ensure they are all compatible.

Remember, a shotgun shell will have the length, shot size, and normal dram (power) printed on it and its box. These numbers are easily matched with the safe usage numbers scripted on the gun barrel.

For instance, a 12 gauge 2-3/4  or 3" magnum will safely handle a 12 gauge 2-3/4"  4-shot high-velocity game load with no issue.

3. Improper Maintenance

When was the last time you cleaned your shotgun? Neglecting the care of your firearm can be dangerous.

Rust and Corrosion

Neglecting regular cleaning and oiling can lead to rust, which weakens your shotgun's barrel. A weakened barrel is more likely to fail under pressure.

Regular maintenance is critical to ensuring your shotgun remains safe and reliable. Simple gun solvent and oil with a toothbrush and bore snake will go a long way. 

Wear and Tear

Shotguns, like any mechanical tool, suffer from wear and tear. Regular inspections can catch signs of metal fatigue or structural damage before they become serious. If in doubt, consult a professional gunsmith.

Close-up of a female hunter holding a shotgun at her side, causes of shotgun explosion concept.

4. Mechanical Failures

Your shotgun is made up of multiple parts. Failure of any one critical piece can lead to an explosion.

Faulty Firing Mechanism

A worn or damaged firing pin can cause misfires or accidental discharges. Regularly inspecting and maintaining internal components is crucial to prevent mechanical failures that could lead to an explosion.

Taking the bolt assembly apart and cleaning it out purposefully will go a long way here. 

Weak Barrel Integrity

Microscopic cracks or manufacturing defects can compromise the barrel's strength. Always purchase firearms from reputable manufacturers and consider professional inspections, especially if your shotgun shows signs of wear.

Incorrect Assembly

After taking the gun apart to clean and inspect, putting it back together incorrectly can be dangerous.

Improper Reassembly Post-Cleaning

After cleaning, it is crucial to ensure all parts are correctly reassembled. Misassembled parts can affect the shotgun's function and safety. 

Follow your firearm's manual or seek professional help if you are unsure.

5. Environmental Factors

Any machine can fail in the outdoors, and your gun is essentially a machine.

Extreme Temperatures

Extreme heat or cold can affect both ammunition performance and the metal integrity of your shotgun. Store your shotgun and ammunition properly to avoid temperature-related issues.

Also, extreme cold can lead to liquid lubricants becoming gel-like and leading to malfunctions. Switch to dry lube in cold climates. 

Moisture Exposure

Water damage can weaken your shotgun through corrosion, especially in humid or rainy conditions. Make Sure your firearm is dry and stored in a moisture-free environment.

Close-up of a hunter loading a shell into a shotgun, avoid shotgun explosion concept.

5 Safety Tips to Prevent Shotgun Explosions

We've covered a lot of what can go wrong, so how can you prevent the issues we've mentioned and avoid an explosion when firing at a big buck on your next hunt? Here are four tips.

  1. Conduct Regular Inspections: Routine checks for any signs of damage or wear are essential. Professional gunsmiths can provide thorough inspections and maintenance advice.

  2. Proper Cleaning and Maintenance: Effective cleaning routines and proper storage practices are crucial. Use high-quality cleaning supplies and lubricants to keep your shotgun in top condition.

  3. Use the Correct Ammunition: Always double-check ammunition compatibility with your shotgun. Purchase it from reputable sources to ensure quality and safety.

  4. Apply Safe Handling Practices: Basic safe gun handling practices cannot be overstated. Always point the barrel in a safe direction and use protective gear, such as eye and ear protection.

  5. Pursue Education and Training: Ongoing education and training programs for hunters are vital. Local hunting clubs and organizations often offer firearm safety courses.

We also recommend taking a hunter education course, like those offered by ilearntohunt, to learn more about safe firearm practices and prevent accidents.

Illustration of ilearntohunt course on a phone screen, learn the causes of shotgun explosions concept.

Learn How to Avoid What Might Cause a Shotgun to Explode Through Hunter Education

I have never experienced a major malfunction in a shotgun, such as an explosion. With that, I always take the time to ensure that the shells I am using are suitable for the game or targets I am potentially shooting and match up with the gun I will be using.

I keep all of my shotgun shells separately for each gun I might be using. No gauges get switched, and no lengths, for that matter. 

A good education will help you get most of this right when learning how to work with a shotgun properly. An online course through ilearntohunt is a comprehensive hunter education program covering many aspects of hunting, including firearm safety.

I took a few of these courses and was impressed with the focus on safety and up-to-date information. Having taken my original hunter's education in the early 90s, a few refreshers from ilearntohunt really helped me codify my already stringent safety practices. The course even gave me a few tips that I now adhere to for safe shotgun use in the field. 

Stay safe when using your shotgun! Learn more about hunting safety essentials by finding the course for your state and getting safety certified.