20 Stihl Chainsaw Chain Guide For MS310 20" Bar (Pro Tips)

If you’re wrestling with chain selection for your Stihl MS310 chainsaw with a 20-inch bar, you’ve landed in the right place. I’ve spent years felling trees, bucking logs, and milling lumber, and I know the frustration of using the wrong chain. It’s not just about cutting—it’s about efficiency, safety, and getting the most out of your equipment. This guide will walk you through everything you need to know to choose the perfect chain for your Stihl MS310, turning it into a wood-cutting beast.

Understanding Your Stihl MS310 and Its 20-Inch Bar

The Stihl MS310 is a workhorse. It’s a mid-range chainsaw known for its reliability and power, making it a favorite among homeowners and professionals alike. The 20-inch bar gives it the reach needed for felling medium-sized trees and tackling larger logs. But a great saw is only as good as its chain.

Chain Pitch, Gauge, and Drive Links: The Holy Trinity

Before diving into specific chain models, let’s cover the basics: pitch, gauge, and drive links. These three parameters determine if a chain is compatible with your saw and bar.

Pitch: This is the distance between any three consecutive rivets, divided by two. It’s usually expressed in inches. Common pitches are .325″, 3/8″ (0.375″), and .404″. The MS310 typically uses a .325″ or 3/8″ pitch, depending on the sprocket.
Gauge: This refers to the thickness of the drive links, the part of the chain that fits into the bar groove. Common gauges are .050″, .058″, and .063″. The MS310 often uses a .063″ gauge.
Drive Links: This is the number of drive links that fit into the bar. This number is specific to the length of the bar. A 20-inch bar on an MS310 usually requires around 72 drive links for a 3/8″ pitch or 78 drive links for a .325″ pitch.

Pro Tip: Always double-check your saw’s manual or the information stamped on the bar to confirm the correct pitch, gauge, and drive link count. Using the wrong chain can damage your saw and create a safety hazard.

Top Chain Recommendations for Your Stihl MS310 (20-Inch Bar)

Alright, let’s get down to brass tacks. Here are my top recommendations for chains that will make your MS310 sing:

1. Stihl Rapid Micro (RM) Chains

Why I Recommend It: The Stihl RM chain is a semi-chisel chain, making it a great all-around option. It’s forgiving, easy to sharpen, and holds up well in dirty conditions. I’ve used it for everything from limbing to felling, and it consistently delivers.
Ideal For: General-purpose cutting, firewood preparation, and occasional use.
Pros:
- Easy to sharpen
- Good for dirty wood
- Affordable
Cons:
- Not as aggressive as full chisel chains
Data Point: Stihl RM chains are often cited as having a 20% longer lifespan than comparable chains in dirty cutting conditions, according to independent tests.
Real-World Example: I once used an RM chain to cut through a pile of storm-damaged oak logs that had been sitting on the ground for months. The chain held up remarkably well, even with the embedded dirt and debris.

2. Stihl Rapid Super (RS) Chains

Why I Recommend It: The Stihl RS chain is a full chisel chain, designed for speed and efficiency. If you’re cutting clean wood and want to maximize your cutting speed, this is the chain for you.
Ideal For: Felling trees, bucking logs, and milling lumber (with proper technique).
Pros:
- Fast cutting
- Efficient
Cons:
- Dulls quickly in dirty conditions
- Requires more precise sharpening
Data Point: Studies have shown that full chisel chains like the Stihl RS can cut up to 30% faster than semi-chisel chains in clean wood.
Real-World Example: When I’m milling lumber, I always reach for an RS chain. The clean, aggressive cut results in smoother boards and less wasted wood.

3. Oregon Chains (Specifically, the 72LGX Series)

Why I Recommend It: Oregon is a well-respected name in the chainsaw chain industry. The 72LGX series is a full chisel chain that rivals the Stihl RS in terms of performance. It’s also widely available and often more affordable.
Ideal For: Similar applications as the Stihl RS chain.
Pros:
- High performance
- Widely available
- Often more affordable
Cons:
- Similar drawbacks to the Stihl RS chain (dulls quickly in dirty conditions, requires precise sharpening).
Data Point: Oregon chains have a reputation for consistent quality. According to user reviews, the 72LGX series maintains sharpness for approximately 2-3 hours of continuous cutting in clean wood.
Real-World Example: I’ve used Oregon chains extensively in my firewood business. They consistently deliver a clean, fast cut, helping me process large volumes of wood quickly and efficiently.

4. Stihl Rapid Duro (RD) Chains

Why I Recommend It: If you’re dealing with extremely dirty wood or abrasive conditions, the Stihl RD chain is your best bet. These chains feature carbide-tipped cutters that hold their edge much longer than standard steel chains.
Ideal For: Cutting dirty wood, demolition work, and situations where you need maximum durability.
Pros:
- Extremely durable
- Holds its edge in dirty conditions
Cons:
- More expensive
- Requires specialized sharpening tools
Data Point: Carbide-tipped chains like the Stihl RD can last up to 10 times longer than standard steel chains in abrasive conditions.
Real-World Example: I once used an RD chain to cut through a pile of old railroad ties. The wood was incredibly dirty and full of embedded grit, but the chain barely showed any signs of wear after several hours of cutting.

5. Low-Kickback Chains

Why I Recommend It: Safety should always be your top priority. Low-kickback chains are designed to reduce the risk of kickback, a dangerous phenomenon that can occur when the tip of the bar contacts an object.
Ideal For: New chainsaw users, homeowners, and anyone concerned about safety.
Pros:
- Reduces the risk of kickback
- Increases safety
Cons:
- Slightly slower cutting speed
Data Point: Studies have shown that low-kickback chains can reduce the severity of kickback incidents by up to 50%.
Real-World Example: When I’m teaching someone how to use a chainsaw, I always start them with a low-kickback chain. It gives them the confidence they need to learn the basics without worrying about kickback.

Choosing the Right Chain: A Decision-Making Framework

With so many options available, how do you choose the right chain for your Stihl MS310? Here’s a framework I use:

Assess Your Cutting Needs: What type of wood are you cutting? How often do you use your chainsaw? Are you prioritizing speed, durability, or safety?
Consider Your Skill Level: Are you an experienced chainsaw user or a beginner? Full chisel chains require more precise sharpening and are better suited for experienced users.
Evaluate Your Budget: Chains range in price from affordable to expensive. Carbide-tipped chains are the most expensive but offer the best durability.
Read Reviews and Ask for Recommendations: Talk to other chainsaw users and read online reviews to get a sense of which chains perform well in real-world conditions.

Chain Maintenance: Keeping Your Chain in Top Condition

No matter which chain you choose, proper maintenance is essential for maximizing its lifespan and performance. Here are some key maintenance tips:

Sharpening Your Chain

Why It Matters: A sharp chain cuts faster, more efficiently, and with less effort. A dull chain can be dangerous, increasing the risk of kickback and causing excessive wear on your saw.
How to Do It: Use a chainsaw file or a chainsaw sharpener to sharpen your chain regularly. Follow the manufacturer’s instructions for the correct filing angle and depth.
Personal Story: I learned the hard way the importance of sharpening. I was once cutting through a large oak log with a dull chain, and the saw kicked back violently, nearly causing me to lose control. Since then, I’ve made it a habit to sharpen my chain before every use.

Cleaning Your Chain

Why It Matters: Dirt, sap, and debris can accumulate on your chain, reducing its cutting efficiency and causing premature wear.
How to Do It: Clean your chain regularly with a brush and solvent. You can also use a chain cleaner specifically designed for chainsaws.
Data Point: A clean chain can cut up to 20% faster than a dirty chain, according to tests conducted by chainsaw manufacturers.

Lubricating Your Chain

Why It Matters: Proper lubrication reduces friction between the chain and the bar, preventing wear and extending the life of both components.
How to Do It: Use a high-quality bar and chain oil. Check the oil level frequently and refill as needed.
Unique Insight: I’ve found that using a synthetic bar and chain oil can significantly extend the life of my chains and bars, especially in cold weather.

Checking Chain Tension

Why It Matters: Proper chain tension is essential for safe and efficient cutting. A loose chain can derail, while a tight chain can cause excessive wear on the bar and sprocket.
How to Do It: Check the chain tension before each use. The chain should be snug against the bar but still able to be pulled around by hand.
Safety Consideration: Always adjust the chain tension with the engine off and the brake engaged.

Wood Science: Understanding What You’re Cutting

To really optimize your chain selection and cutting technique, it helps to understand the properties of the wood you’re working with.

Hardwood vs. Softwood

Hardwood: Generally denser and more difficult to cut than softwood. Examples include oak, maple, and hickory.
Softwood: Generally less dense and easier to cut than hardwood. Examples include pine, fir, and spruce.
Impact on Chain Selection: Hardwood requires a more aggressive chain and more frequent sharpening. Softwood can be cut with a less aggressive chain and requires less frequent sharpening.

Moisture Content

Why It Matters: The moisture content of wood affects its cutting properties. Green wood (freshly cut) is easier to cut than dry wood, but it’s also heavier and more prone to warping.
Data Point: Green wood can have a moisture content of over 100%, while seasoned firewood typically has a moisture content of 20% or less.
Personal Experience: I’ve found that cutting green wood requires a sharper chain and more frequent cleaning, as the sap can quickly gum up the chain.

Grain Direction

Why It Matters: Cutting with the grain is generally easier than cutting against the grain. Cutting against the grain can cause the wood to splinter and bind the chain.
Tip: When bucking logs, try to position the log so that you’re cutting with the grain as much as possible.

Project Planning and Execution: Making the Most of Your Chainsaw

Before you start cutting, take some time to plan your project and ensure that you have the right tools and equipment.

Safety Gear

Essential Items: Safety glasses, hearing protection, gloves, chaps, and a helmet are essential for safe chainsaw operation.
Personal Recommendation: I always wear a full-face shield when using a chainsaw. It provides better protection than safety glasses and keeps sawdust out of my eyes.

Tool Selection

Beyond the Chainsaw: In addition to your chainsaw, you’ll need tools like a felling axe, wedges, and a measuring tape.
Unique Insight: A good felling axe can be invaluable for felling trees and splitting large logs.

Work Area Preparation

Clear the Area: Clear the area around the tree or log you’re cutting. Remove any obstacles that could trip you or interfere with your work.
Plan Your Escape Route: Before felling a tree, plan your escape route in case the tree falls in an unexpected direction.

Cutting Techniques

Felling: Use proper felling techniques to ensure that the tree falls in the desired direction.
Bucking: Buck logs into manageable lengths for firewood or milling.
Limbing: Remove branches from felled trees.
Safety First: Always prioritize safety when using a chainsaw. Follow the manufacturer’s instructions and use common sense.

Firewood Seasoning Techniques and Safety Considerations

If you’re using your Stihl MS310 to prepare firewood, proper seasoning is essential for maximizing its heat output and minimizing creosote buildup in your chimney.

Seasoning Process

Splitting: Split the wood into smaller pieces to speed up the drying process.
Stacking: Stack the wood in a sunny, well-ventilated area.
Covering: Cover the top of the wood pile to protect it from rain and snow.
Timing: Allow the wood to season for at least six months, and preferably a year or more.
Data Point: Properly seasoned firewood can have up to 50% more heat output than green wood.

Safety Considerations

Stacking Stability: Stack the wood in a stable manner to prevent it from collapsing.
Pest Control: Keep the wood pile away from your house to prevent pests from entering your home.
Fire Safety: Store the wood pile away from any potential fire hazards.

Cost-Benefit Analyses of Equipment and Methods

Investing in the right equipment and methods can save you time and money in the long run.

Manual vs. Hydraulic Splitters

Manual Splitters: Affordable and good for occasional use.
Hydraulic Splitters: More expensive but much faster and easier to use for large volumes of wood.
Cost-Benefit Analysis: If you’re splitting a lot of wood, a hydraulic splitter is worth the investment.

Chainsaw Mills

Portable Mills: Allow you to mill lumber on-site.
Cost-Benefit Analysis: If you have access to logs, a chainsaw mill can be a cost-effective way to produce your own lumber.

Challenges Faced by Small Workshops or DIYers Globally

Chainsaw users around the world face a variety of challenges, including:

Access to Equipment

Solution: Look for affordable used equipment or consider renting tools.

Training and Education

Solution: Take a chainsaw safety course or watch instructional videos online.

Environmental Regulations

Solution: Be aware of local environmental regulations and follow best practices for sustainable forestry.

Concluding Thoughts: Empowering Your Wood Processing Journey

Selecting the right chainsaw chain for your Stihl MS310 with a 20-inch bar is more than just a purchase; it’s an investment in efficiency, safety, and the success of your wood processing endeavors. From understanding the nuances of chain pitch and gauge to mastering essential maintenance techniques, the knowledge you’ve gained here will empower you to make informed decisions and tackle your projects with confidence.

Remember, the best chain is the one that aligns with your specific needs, skill level, and the type of wood you’re working with. Don’t hesitate to experiment, seek advice from experienced users, and prioritize safety above all else.

As you continue your journey in wood processing, I encourage you to embrace the challenges, celebrate the successes, and always strive to learn and improve. With the right tools, knowledge, and a healthy dose of perseverance, you’ll be well on your way to achieving your goals and creating something truly remarkable.