Choosing how you set up and zeroing a laser sight is critical for accuracy and consistency. The two primary ways are utilizing a parallel offset to the rifle bore or converging the laser with the rifle bore at a chosen distance. Understanding the pros, cons, and step-by-step processes for implementing parallel vs converging zeroing, both can help determine the ideal approach based on the rifle’s intended use.
Parallel vs Converging Zeroing
The Parallel Zero
A parallel zero means setting up a laser in a way that its light stays in line with both the rifle sight and the barrel of the gun, but without actually touching them. It’s like making sure the laser is perfectly lined up but at a little distance.
The cool part about doing a parallel zero is that it helps to keep things consistent when you’re aiming or making adjustments. The laser will always point to the same spot on the target, no matter how far away it is.To do a parallel zero, you need a special target that matches your laser and how it’s set up on your gun. This target has marks on it to help you get everything lined up just right. If you don’t have that kind of target, you can make your own and mark a point at the right distance.
Steps to Establishing a Parallel Zero
Step 1: Prepare the shooting position and ensure the rifle is securely grounded via bags or bipod to maximize stability. Confirm target distance.
Step 2: Dial windage/elevation adjustments on the laser until the beam aligns with the fixed offset aiming reference marked on the sighting target.
Step 3: Fire a 3-5 round shot group, making minimal further laser adjustments, if necessary, between volleys.
Step 4: Confirm the laser point of impact is hitting precisely at the offset mark, indicating consistent parallel alignment.
Pros of the Parallel Zero
Steady Aim: Holding your gun will always be the same distance from where you want to shoot. It’s like having a reliable spot to aim from, about 1.5 inches away and at a bit of an angle.
Proven Method: The military uses this way to set up a laser, and lots of people have done it successfully. Even if someone didn’t do great on a test (ASVAB), they can still make it work. So, it’s easy for all.
Cons of the Parallel Zero
Steady Aim (Again): While having a consistent grip is good, it can be a bit tricky too. Always keeping your aim the same means you’ll have to adjust for it. It’s easy to practice, but it can be tough when aiming at small targets far away, like a little fox.
A Bit Tricky: It’s not super hard, but out of the options, it’s the most challenging. If you don’t have a laser that adjusts by itself, this way can be a bit tricky.
The Converging Zero
With a converging zero, the laser is adjusted to intersect the sight picture’s point of aim at a chosen distance and point, before offsetting again past that ‘zero’. The converging distance depends on the weapon and its practical employment, but 50 yards is standard.
Establishing a Converging Zero
Step 1: From a steady shooting position, centre rifle optics reticle on the target.
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Step 2: Switch on the laser and dial windage/elevation until its beam converges at the reticle’s centre point.
Step 3: Fire 3-5 rounds to confirm, making minimal further laser adjustments if needed.
NOTE: Unlike the fixed offset of a parallel zero, the spacing between bore/sight/laser continuously changes across incremental ranges before and after the converging ‘zero’ point. So, a concrete understanding of required holds based on range is essential while zeroing a laser.
Pros of the Converging Zero
- Simple: It’s easy to set up, just like any other sight. When you aim at a certain distance, your laser will match, making it simpler. This is especially good if you don’t have a visible laser to assist you.
Cons of the Converging Zero
- Tricky Holds: After you set up at one distance, you’ll need to aim differently for every other distance, and this can get confusing quickly. Let’s say you set up at 36 yards, but now you’re aiming at 100 yards. Instead of a constant 1.5-inch hold up and to the right, you’d need a 3-inch low left hold, which might seem a bit silly.
Considerations For Application
When choosing between parallel vs converging zeroing, rifle operators should consider these factors:
- Typical engagement distances expected
- Need for outright accuracy vs rapid target acquisition
- Ability to prepare dedicated zeroing target at a known distance
- Time available for meticulous setup vs need for immediate use
- Operational plans to utilize multiple shooters for single-weapon
Parallel vs converging zeroing a laser requires extensive shooting once appropriately aligned – but application plays a significant role. Parallel works well for voluminous fires with tight shot groups. Converging offers quicker rough zeroing if pinpoint accuracy past 50 yards is optional. As competency develops, train to understand both zeroes.
Understanding How Bullets Hit Targets:
Convergent:
Meeting Point: Imagine your bullet and a laser dot coming together at a certain point, let’s say 50 meters. They both hit the target exactly at that spot.
Deviation Warning: However, as you shoot at different distances, the bullet’s path may start to separate from the laser dot. So, if you set the zero point at 50m but shoot at 100m or 25m, the bullet will hit in a different place.
Parallel:
Staying Side by Side: Picture the bullet’s path and the laser dot moving alongside each other, never crossing over each other during the shot.
image source: Quora
Expected Engagement Distance:
Convergent:
Short Distances: This is great for close-up situations. You want the laser dot to point exactly where the bullet will hit at a specific distance. But, be careful, it might not be as accurate beyond that distance.
Parallel:
Longer Distances: This is better for shooting at longer ranges. Here, the laser dot stays in line with the bullet’s path until it hits the target, making it easier to shoot at further distances.
Shooting Scenarios:
Convergent:
Tactical Advantage: This method is recommended for tactical operations and law enforcement within 25-50m. It’s perfect for quickly aiming at targets in close-quarter situations.
Parallel:
Versatile: This is useful for shooting at various distances, like beyond 100m. It’s great for long-range shooting or hunting in different environments.
Now you know about parallel vs converging zeroing a laser properly. You may also like to read our comprehensive buyers guide glock laser light.
End Thought:
Properly zeroing a laser sight enables accurate shot placement in low-light conditions. While the parallel method promotes consistency in holds and adjustments, converging setups trade some outright precision for more straightforward acquisition. Train purposefully on any infrared laser devices to ensure alignment and proficient employment. Marksmanship and safety begin with diligent fundamentals.