4 Common Mossberg 940 Pro Tactical Problems & How To Fix

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So, I took the Mossberg 940 Pro Tactical for a spin-out in the field. It really gave it a workout to see how it stacks up. Don’t get me wrong, it’s a solid piece of hardware, but I did run into a few Mossberg 940 Pro Tactical Problems.

We’re talking about feeding problems, issues with the trigger, jamming, and extraction problems. Don’t sweat it! We will also dive deep into some solutions to help you make the most out of your Mossberg.

This article aims to arm you with information that’ll help you troubleshoot some of these problems. No beating around the bush, just straight-up advice.

Overview of Mossberg 940 Pro Tactical Problems & Solutions

Mossberg 940 Pro Tactical ProblemsSolutions 
Feeding ProblemClean the magazine and feed ramp; use quality ammo.
Issue with the TriggerApply high-quality gun lubricant to the trigger.
Jamming IssueRemove burrs, if any; switch to quality ammo.
Extraction ProblemClean and lubricate the chamber; use quality ammo.

Top 4 Mossberg 940 Pro Tactical Problems & Solutions

1. Feeding Problem

So, let’s kick things off with the feeding problem. Out in the field, I noticed the rounds weren’t chambering as smoothly as they should. 

It felt like the gun was struggling a bit, which you don’t want when you’re counting on it. Trust me, there’s nothing more frustrating than dealing with a feeding issue when you’re in a situation where every second counts. 

This isn’t just a minor inconvenience; it’s a real problem that can affect the firearm’s overall performance and reliability.


Now, on to the good stuff—the solution. The first thing I did was give the magazine and feed ramp a thorough cleaning. Gunk and debris can be sneaky culprits. 

After that, I decided to switch to a different brand of ammo, opting for higher-quality rounds. It made a significant difference. My Mossberg 940 Pro Tactical was back to operating like a charm. 

But hey, remember that maintaining your firearm is key; keep that magazine and feed ramp clean as part of your regular maintenance routine. Doing these simple things drastically improved the feeding issue, based on my personal experience.

2. Issue with the Trigger

Alright, moving on to the next problem: the trigger. While out in the field, I noticed that the trigger pull felt inconsistent. 

One moment, it was smooth; the next, it was gritty, and it had me puzzled. You don’t want any surprises when it comes to the trigger; you want it to behave predictably every time you squeeze it. 

An inconsistent trigger can throw off your accuracy and, more importantly, could be a safety concern if it behaves erratically.


Okay, so what did I do to fix this? First, I checked to ensure nothing obstructed the trigger assembly. Turned out it was clean. 

My next step was to apply some high-quality gun lubricant specifically designed for triggers. Based on my subsequent tests, This made the trigger action more consistent. If you’re facing similar issues, you may also want to consider a trigger adjustment. 

You can either do it yourself if you’re savvy enough or take it to a professional. Either way, regular maintenance that includes proper lubrication will go a long way to solving any trigger inconsistencies.

3. Jamming Issue

Next up, let’s chat about the jamming issue. You don’t want to deal with this, especially in high-stress environments. 

When I was testing the Mossberg 940 Pro Tactical, the gun jammed on me more than once; trust me, it’s disheartening. It’s not just an inconvenience; a jam could potentially turn a safe situation into a dangerous one really fast. 

If you’re like me, you want your firearm to perform reliably, no matter the circumstances.


Here’s what worked for me: First, I took apart the gun and inspected the chamber and feed ramp. I found a small burr, a manufacturing defect, that seemed to be causing the issue. 

A minor polish with some fine-grade sandpaper smoothed it out. The second thing I did was change the type of ammunition I used. 

Opting for quality ammo can really make a difference when it comes to jamming. After these steps, the jamming issue was notably reduced in subsequent tests. 

Regular cleaning and proper lubrication are crucial in keeping your firearm jam-free.

4. Extraction Problem

Last but definitely not least, let’s tackle the extraction problem. This issue became apparent when I was doing my usual tests on the field. 

After firing, the spent casing didn’t always clear the chamber, effectively turning my semi-auto into a manual action gun for a moment. Not fun, let me tell you. 

This sort of issue can really mess with your shooting rhythm and confidence, not to mention that it compromises the firearm’s reliability.


So, what did I do to get around this? First thing, I examined the extractor claw and the ejector. Sometimes, a weak or damaged extractor can be the root cause. 

In my case, everything looked alright. My next move was to clean the chamber thoroughly; sometimes, residue can cause issues with extraction. After a good clean, I lubricated the necessary parts and tested it again. 

The improvement was significant. Additionally, I switched to quality ammunition, as cheaper ammo can often contribute to extraction issues.

Final Verdict

Wrapping things up, the Mossberg 940 Pro Tactical is quite a robust and reliable shotgun, but like any piece of machinery, it has its moments. 

After field-testing this firearm extensively, I can say that the issues I faced, such as feeding problems, trigger inconsistencies, jamming, and extraction issues, aren’t deal-breakers. 

They were quite manageable with some basic care and maintenance. Swapping to higher-quality ammunition also made a considerable difference. 

So, if you’re ready to invest a little time in regular upkeep, this shotgun can offer excellent performance and reliability.


Is the Mossberg 940 reliable?

Based on my extensive field tests, yes, it is reliable, especially when properly maintained.

Can the Mossberg 940 Pro shoot slugs?

Yes, it can handle slugs as well as buckshot without any issues.

Which is better Mossberg 930 or 940?

The 940 is an evolution of the 930, offering notable improvements in performance and reliability.

What is the length of pull on a Mossberg 940 Pro Tactical?

The length of pull ranges from 12.5″ to 14.25″, making it adjustable for different users.

How many rounds does a Mossberg 940 Tactical hold?

The magazine capacity is 7 rounds, thanks to an included extension tube.

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I'm Micheal, an avid shooter and hunting enthusiast from Texas. I'm a recreational shooter who loves to spend time at the range and enjoy learning about new firearms and gears. I love to write about guns and share my passion for shooting with others.

3 thoughts on “4 Common Mossberg 940 Pro Tactical Problems & How To Fix”

  1. My Mossberg 940 pro tactical had issues straight out of the box. Everything from the front sight being off to one side, the barrel clamp slips when you shoot it. Low base brass jams up the entire bolt and releases shells from the mag tube which jam up the elevator. Mossberg told me new parts would be at my house in 3 weeks, 3 months later I have an expensive dust collector that is not repaired. They also stated I need to fire shells that are over 2000fps, what a joke. They don’t sell those on the shelves here and that is a pretty hot round for a shotgun. If you look at their ad on their web page, the model is even shooting low base brass with one ejecting clean from the gun. I should have gone Beneli or Beretta. Mossberg is a true disappointment and waste of my hard earned money.

    • Really sorry to hear about your Mossberg 940 issues. That’s super frustrating, especially with the long wait for parts and specific ammo requirements. Totally understand your disappointment. Maybe a local gunsmith could offer a quick fix? Thanks for sharing your experience – it’s really valuable for the community.

      • Thanks for the advice. I feel it should have never left their factory in this condition and it is their responsibility to fix it. They just don’t seem to be able to get it done. I believe the chamber is out of spec too. Will be looking at by a Benelli now. Thanks


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