A Data-Driven Approach To Precision Rifles, Optics & Gear
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Tag Archives: Reloading Data

6.5 Creedmoor Ammo Test Part 2: Physical Round-To-Round Consistency

6.5 Creedmoor Ammo Consistency

I’m so excited to start sharing the data I collected in a massive field test I conducted on 19 different types of 6.5 Creedmoor match-grade factory ammo. With the price of this kind of 6.5 Creedmoor “match-grade” factory ammo hovering around $3/round right now, it seems like this series might be especially relevant! That’s too expensive for most people to experiment with several brands and types of ammo, so hopefully, this research will help guys narrow down their search to a couple of the best-performing brands and types to try in their rifles. I know there are a ton of ...

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6XC Load Data – What The Pros Use

6XC Load Data

The 6XC has been a popular choice among top-ranked precision rifle shooters since they first started having long range precision rifle matches. This past year there were 3 shooters using a 6XC in the top 25 in the PRS, and 4 in the top 25 in the NRL. It’s clearly a very capable round in the hands of a good shooter. This article shares the 6XC load data these top-ranked shooters are reloading in their match ammo.

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300 Norma Mag Custom ELR Rifle

300 Norma 338 Lapua Custom ELR Rifle

I’m sharing a series of posts on ELR shooting, but I didn’t want to jump from the long-range rifles in mid-size 6mm and 6.5mm cartridges that I normally talk about straight into the extreme, super-high-performance 375+ caliber rifles used to engage targets at 2+ miles. Instead of just presenting the extremes, I thought it’d be helpful to first share a rifle setup that is somewhere in between. Then in later posts I’ll get into the more specialized setups used to push the boundaries of what is possible with shoulder-fired rifles. In this post, I’ll share the details of a rifle ...

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PRB’s Load Data: My Complete Reloading Data for Target Shooting & Hunting

These are all of my pet loads. They were what I found to be the most precise in my rifles after extensive and tedious load development. I may tweak the loads slightly as the throat of a barrel erodes, but I don’t typically vary too far from what is shown here. In fact, this is the page that I personally reference when I need to remember the details of one of my loads. You should always reference a quality reloading manual and start with the minimum recommended loads, and work your way up. Just because these have proven safe in ...

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7mm Rem Mag Load Development Part 4: 5 Shot Groups

I’ve already done quite a bit up to this point in my load development.  At this point I know I want to try to find an accurate load for Berger’s 168gr VLD over Hodgdon’s Retumbo powder and I’m now zeroed in on a very specific range of powder weights that seem to be very tolerant of slight pressure variances.  You can see the previous posts for how I got here. My next step is to test 5 shot groups in very granular powder increments. Jump to another step: Part 1: Bullet Selection & Real-World Velocities Part 2: Audette’s Ladder Test Part 3: Optimal Charge Weight Part ...

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7mm Rem Mag Chamber Print

When the 7mm Remington Magnum was originally released, it was met with overwhelming demand.  Every rifle manufacturer rushed to offer rifles chambered for the new cartridge, and in the rush some of the chamber dimensions varied slightly from different manufacturers.  This variation in the 7mm Rem Mag chamber dimensions has carried on to today, and there is still more differences in the chamber dimensions than for virtually any other rifle cartridge. What’s a chamber print? A “chamber print” is an illustration of the chamber reamer used to cut a rifle’s chamber.  It contains all of the key dimensions related to ...

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7mm Rem Mag Load Development Part 3: Optimal Charge Weight

After I identified a promising range of powder weights using Audetter’s ladder test, my next step was to use Dan Newberry’s Optimal Charge Weight (OCW) Method to offset the “scatter node” drawback inherently present in the ladder test.  To learn more about that, read this article comparing the OCW method with the ladder test. The OCW method is based on the observation that there are some loads out there (like Federal’s match ammo for the 308) that shoot really well out of just about any rifle.  How can one recipe shoot so well out of so many different rifles?  Dan Newberry believes accuracy of ...

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