The Ultimate Guide to Perfecting Your Rifle Zero for Deer Season

Is your scope as ready as you are for deer season?

With deer rifle season in Oklahoma opening this Saturday, now is the perfect time to do your final checks and ensure your rifle is properly zeroed. The last thing you want is to miss that trophy buck over something as simple as an unverified rifle zero.

Let’s talk about why zeroing your rifle is essential, how to do it effectively, and tips to ensure your setup is ready for the field.


Why Zeroing is Crucial for Hunting Success

Zeroing your rifle is the process of aligning your point of aim (POA) with the point of impact (POI) at a specific distance. This is critical for ethical hunting, ensuring your shots are accurate and effective. A poorly zeroed rifle can result in missed shots or, worse, wounding an animal without a clean kill. Whether you’re hunting deer, elk, or hogs, precision matters.

Why now?
With only a few days until the season starts, zeroing ensures your rifle is dialed in for your chosen ammunition, weather conditions, and shooting distance. Waiting until the last minute could mean rushing the process or, even worse, missing an opportunity on opening day.


Tech Tip Tuesday: Zeroing Your Rifle for Hunting Season

With deer rifle season in Oklahoma opening this Saturday, now is the perfect time to do your final checks and ensure your rifle is properly zeroed. The last thing you want is to miss that trophy buck over something as simple as an unverified rifle zero. Let’s talk about why zeroing your rifle is essential, how to do it effectively, and tips to ensure your setup is ready for the field.


Why Zeroing is Crucial for Hunting Success

Zeroing your rifle is the process of aligning your point of aim (POA) with the point of impact (POI) at a specific distance. This is critical for ethical hunting, ensuring your shots are accurate and effective. A poorly zeroed rifle can result in missed shots or, worse, wounding an animal without a clean kill. Whether you’re hunting deer, elk, or hogs, precision matters.

Why now?
With only a few days until the season starts, zeroing ensures your rifle is dialed in for your chosen ammunition, weather conditions, and shooting distance. Waiting until the last minute could mean rushing the process or, even worse, missing an opportunity on opening day.


Range supplies with TFirearms for the perfect rifle scope zero
Make sure you bring everything you’ll need with you to the range, having a comfortable stress free experience can make all the difference when it comes to getting a good zero.

Preparing for the Range

Before heading to the range, gather the following essentials:

  1. Rifle and Ammunition
    • Use the exact ammunition you plan to hunt with. Different loads can have varying ballistics, so consistency is key.
  2. Optics
    • Make sure your scope is securely mounted and all screws are properly torqued. A loose mount can lead to shifting zero.
  3. Target and Stand
    • Use a target with clear aiming points and gridlines to track adjustments easily.
  4. Shooting Rest or Bipod
    • A stable platform is crucial for accurate shooting during zeroing.
  5. Tools
    • Bring tools for scope adjustments and a torque wrench if needed.
  6. Rangefinder
    • To confirm distances for precision zeroing.

The Zeroing Process

Follow these steps to zero your rifle effectively:

1. Start Close

Begin at 25 yards to ensure you’re on paper. Fire three shots, then check your grouping. Adjust your scope’s windage and elevation turrets to center the group on the target.

2. Move to 100 Yards

Once you’re on paper at 25 yards, move back to 100 yards, which is a standard zero distance for most hunting rifles. Again, fire three shots and make adjustments until your group is centered.

3. Fine-Tune Your Zero

Once your rifle is dialed in at 100 yards, fine-tune your adjustments to ensure precision. Use a bore snake or cleaning rod between groups to maintain consistency if your barrel heats up.

4. Confirm and Lock-In

After fine-tuning, fire a final 3-5 shot group to confirm your zero. Once satisfied, note your scope settings, and consider using a scope cap or dial markings to lock in your zero.


A group at 25 yards should be touching or close to touching with a good rifle. However don’t let this tight of a group fool you into thinking you have a good zero.
The same gun at 100 yards has a much different group. This one happens to be zeroed at a different range and we’re checking our hold overs to make sure they’re accurate but you can see that 1/4 of an inch group is now around an inch or so as the rounds move a larger distance.

Factors to Consider for Hunting Zero

1. Shooting Distance

While 100 yards is the standard zero, consider your hunting environment. If you’re in dense woods, a 50-yard zero might be more practical. For open fields, zeroing at 200 yards could be advantageous.

2. Ammunition Ballistics

Different cartridges and bullet weights perform differently. For example, a .308 Winchester with a 165-grain bullet will have a different trajectory than a 55-grain .223 Remington. Check your ammunition’s ballistic chart to understand its drop at various ranges.

3. Weather Conditions

Temperature, humidity, and altitude can affect bullet trajectory. If you’re hunting in conditions drastically different from when you zeroed, your POI may shift slightly. Test your rifle in similar conditions to those you’ll face in the field.

4. Ethical Shots

When zeroing, think about the maximum distance at which you can confidently make a clean kill. For many hunters, this is 200-300 yards. Practice shooting at various distances to ensure accuracy within your ethical range.


Good groups and a solid set up make it easy to shoot consistently so rounds are easily walked into the target at short range. Note the use of a different colored target pastie to make the center of the bullseye stand out better for the shooter.

Troubleshooting Common Zeroing Issues

1. Inconsistent Groups

If your groups are inconsistent, check your shooting technique, scope mount, and ammunition quality. A loose scope or improper trigger pull can throw off your shots.

2. Scope Adjustments Not Working

If your adjustments don’t seem to move the POI, you may have a defective scope or incorrect turret settings. Double-check your equipment and try again.

3. Difficulty Seeing the Target

Use a target with a high-contrast background or larger aiming points. Upgrading to a higher-magnification scope can also help.

I like using inexpensive paper targets at 25 yards and switching to Birchwood Casey Shoot-N-C targets at longer distances to easily spot my impacts. Don’t hesitate to try different targets that work best with your scope. Everything about zeroing should feel comfortable, including how clearly you can see your target.

Beyond Zeroing: Pre-Season Checklist

1. Inspect Your Rifle

Clean and oil your rifle to ensure smooth operation. Check for rust, dirt, or damage that could affect performance.

2. Practice Shooting Positions

Practice shooting from the positions you’ll use in the field, such as standing, kneeling, or prone. This helps build muscle memory and confidence.

3. Verify Range Conditions

Scout your hunting area to identify likely shooting distances. This allows you to tailor your zero and practice accordingly.


Why Zeroing Matters for Trophy Bucks

Imagine this scenario: It’s opening morning, and the trophy buck you’ve been scouting all year steps into a clearing. You steady your rifle, take aim, and fire—only to miss because your rifle wasn’t properly zeroed. Avoiding this disappointment starts with preparation.

Zeroing your rifle isn’t just about accuracy; it’s about confidence. When you know your rifle is dialed in, you can focus on making the shot count without second-guessing your equipment.

I like to always take a picture of my scope turrets. These ones will allow me to zero them out later. But even when I do that I always like to take a photo the the turrets so if I do miss a shot I can always reference where my turrets were set prior to having issues.

Closing Thoughts

With Oklahoma’s deer rifle season opening this Saturday, now is the time to ensure your rifle is ready to go. Zeroing your rifle is a simple but critical step that can make the difference between filling your tag and going home empty-handed.

At TFirearms, we’re always here to help. Whether you need advice on zeroing, selecting the right ammunition, or upgrading your gear, our knowledgeable staff is here for you. We also offer laser bore sighting in-store for just $20.00, making your range zeroing process faster and more efficient. Don’t have time to hit the range? Let us handle it for you with our range zeroing service. For $75.00, we’ll zero your rifle with your ammo to the range of your choice, so you can head into the season with confidence. Swing by the shop and let’s make sure your hunting season starts off on the right foot.

Stay safe, shoot straight, and happy hunting! We’ll see you next Tuesday for another Tech Tip.

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