A Data-Driven Approach To Precision Rifles, Optics & Gear
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Field Tests & Studies

These are the in-depth, data-driven field tests. These original studies are conducted with the intent to publish the most objective data possible gathered from an independent source through a pragmatic approach.

How Fast Does A Barrel Erode?

how fast does a barrel wear

This article focuses on how quickly the lands of a rifle barrel usually erode, especially for mid-sized cartridges that are popular in precision rifle matches. It also explains how many shooters try to manage their seating depth and bullet jump over the life of the barrel. These are topics don't seem to get much attention and are rarely discussed in any comprehensive format, so hopefully it provides some useful information and tips. The article also poses some questions that might make us rethink priorities when it comes to managing bullet jump, at least when applying the concepts to some specific shooting disciplines where you might fire 100-200 rounds over the course of a weekend.

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Bullet Jump & Seating Depth: Best Practices & Conventional Wisdom

Bullet Jump and Seating Depth Reloading Best Practices

With so many events canceled and stores closed, what a great time to do some reloading! Over the past several weeks, I have been working on a series of posts that I'm very excited to finally share with you guys! This article provides a comprehensive overview of what most professionally published books and reloading manuals suggest about bullet jump and seating depth when it comes to precision rifles. I have a big stack of books on the subject, and I tried to combine the most relevant info from each of them when it comes to fine-tuning the seating depth of your ammo.

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Pocket Rangefinder Field Test Showdown

Pocket Rangefinder Review

Over the past few months, I’ve been testing several high-end pocket laser rangefinders, like the new Vectronix Terrapin X and Leica Rangemaster CRF 2800.COM, alongside other popular, top-of-the-line models in the $1,000+ price range. I used all of them extensively, and took them out to the field to test their ranging performance side-by-side. This post summarizes those results and other noteworthy points about features on each one. An accurate rangefinder is one of the most critical pieces of gear for long-range shooting. A few years ago, I wrote a post that quantifies how much range uncertainty can impact hit probability. ...

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Barrel Field Test Featured In Modern Advancements Volume 2

Barrel Test in Modern Advancements In Long Range Shooting

Lots of people have asked what I’ve been working on, and I’m excited to finally be able to tell you guys about a huge project I’ve invested a ton of time in over the past several months. Last year, Bryan Litz and team over at Applied Ballistics ask if I’d be interested in contributing to Volume 2 of their Modern Advancements in Long Range Shooting series. I have immense respect for the work those guys have done and the huge impact they’ve had on me and the rest of the shooting community, so I was honored to even be asked. ...

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Muzzle Brake: Summary of Field Test Results

Muzzle Brakes

This post summarizes the eye-opening results for the massive muzzle brake field test I’ve worked on the past few months. It included several objective tests to quantify the performance of 20+ muzzle brakes designed for precision rifles in 6mm through 30 caliber. My goal with this project was to equip fellow long-range shooters with as much hard data as I could reasonably gather, so they could make an informed buying decision for their application. I’ve already published ridiculously exhaustive details of each test, but I’ll try to sum it up in this post. This test focused on muzzle brakes designed ...

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Muzzle Brakes: Muzzle Blast & Ground Signature

Muzzle Brake Blast

Muzzle brake designs vary widely, and their blast pattern varies significantly as well. I wanted to capture the muzzle blast somehow to help you see the differences between the 20+ models in my field test. There is no established method for doing this, so I had to get creative. My first attempt was with a fog machine. Don’t laugh! My idea was to set up some high-speed cameras (one from above, another from the side), flood the area around the rifle with fog, then fire the rifle, and watch how the fog was dispersed. It was a bad idea. I ...

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Muzzle Brakes: Sound Test

Muzzle Brake Sound Test

I thought about these muzzle brake tests for over a year before I started this field test. We all know one of the biggest downsides of a muzzle brake is how loud they are. If you’ve shot more than a couple of these, you know some are much louder than others. So I naturally wanted to quantify how loud each model was, but it turns out that is much more complex than it may seem. Steve Adelmann (one of my favorite gun writers) explains the issues involved in quantifying the sound signature of a firearm: “When you compare decibel measurements ...

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Muzzle Brakes: Ability To Stay On Target

Best Muzzle Brake For Staying On Target

One important aspect of a muzzle brake is helping the rifle stay on target. In fact, I was discussing this muzzle brake test with David Tubb, a very accomplished rifleman, and he is convinced the ability to stay on target was the most important aspect of a muzzle brake. He thought a few percentage points difference in recoil reduction may not make a huge difference (or help you get more hits), but a brake that can keep you on target can be a big advantage. Staying on target not only allows quick follow-up shots, but more importantly for precision shooting, ...

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Muzzle Brakes: Recoil Reduction Results Summary

Best Muzzle Brakes

This post provides a comprehensive view of the muzzle brake recoil reduction data gathered on all 4 rifles. You can dive deeper into the recoil data in these posts: How The Data Was Collected 6mm & 6.5mm Recoil Results 308 & 300 Mag Recoil Results To recap, here is a look at the 4 cartridges and rifles used for the recoil tests: First, let’s look at how the recoil signature of each rifle was affected. The graphic below shows the amount of recoil force over time for each rifle, which was directly measured at the butt of the rifle. Each ...

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Muzzle Brakes: Recoil Results for 308 & 300 Magnum

308 Muzzle Brake & 300 Mag Muzzle Brake

This post summarizes the results for the recoil tests ran on 20+ muzzle brakes using two 30 caliber test rifles: the 308 Win and the monster 300 Norma Magnum. The recoil data was collected using high-speed, high-resolution force sensors. For more info on the test equipment and how the data was gathered, please see the recoil post. Here is the full line-up of muzzle brakes, and you can read more about each in this post. How to Read the Results As we discussed in the recoil post, when someone claims a product “reduces recoil by 50%” … it usually isn’t ...

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