A Data-Driven Approach To Precision Rifles, Optics & Gear
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This category includes all the posts related to precision rifles builds, parts, and accessories. … Enjoy!

Grape, Purple & Pink McMillan Marble Stock Color Photo Gallery

This photo gallery has all of the Grape, Purple & Pink McMillan stock pictures.  Although these are typically seen as a little more girly … I have to admit some of them look pretty sharp.  These colors will definitely give your rifle a look that is unique to you, and might even convince your girlfriend to go shoot with you.  I’m not sure if that is a blessing or a curse … but maybe it’s an excuse to buy another gun? I’ve created several other photo galleries for other colors and also for McMillan’s camo & flame stock patterns as ...

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McMillan Flame Stock Color Photo Gallery

This photo gallery contains McMillan marble stock pictures that have the “flame” finish.  McMillan’s flame marble stock finish (also somtimes called a fade finish) is made using three colors that transition from the lightest at one end of the stock to the darkest at the other end.  The dark end is typically at the butt of the rifle.  The gallery includes all colors of stocks with a flame finish. I’ve created several other photo galleries for other colors and also for McMillan’s camo & flame stock patterns as well.  I even have a few tips for things to keep in mind ...

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How To Adjust McMillan A5 Stock

There are two types of adjustments you can make on the McMillan A5 stocks: Adjust Length of Pull (LOP) Adjust Comb (i.e. cheek piece) Both of these adjustments are designed to provide better site acquisition, comfort, and control of your weapon.  These same adjustments are common on most of McMillan tactical style stocks (A3, A4, A3-5, etc), as well as some competition and other models of stocks. How To Adjust Length of Pull (LOP) On McMillan Stocks If you don’t know what your length of pull should be, it’s easy to measure.  Check out this article on how to measure your ...

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AI Stock Shootout: AX vs AICS vs AICS with Viperskins

My custom target/hunting 7mm Rem Mag has a McMillan A3-5 stock on it, but I’m also a fan of the Accuracy International stocks and have been considering building my next rifle on one of their chassis.  These are very popular upgrades for Remington 700 rifles.  With the recent release of their AX platform, along with the new skins available for the Accuracy International Chassis System (AICS) platform … there are a lot of options. One major benefit of an Accuracy International stock is it’s folding option.  Precision rifles can get pretty long, especially with a can.  I actually had a hard ...

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Barrel Length and Velocity

I recently had an opportunity to fire the same 223 Remington ammo over a chronograph out of 3 very different barrel lengths, and recorded the muzzle velocity differences I observed.  The chronograph was an Oehler 35p, which is one of the most accurate in the industry.  The ammo fired was Federal’s 55gr FMJ ammo, and all of it was out of the same box. Here are my measured results: Barrel Length (inches) Average Muzzle Velocity (fps) 20″ 3019 fps 16″ 2837 fps 7.5″ 2135 fps Here is an inferred trendline based on the measured velocities for other 223 Remington barrel ...

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Rifle Screw Torque Settings Guidelines

I’ve had to reference back to these torque specifications a couple times, and thought it’d be helpful to post. It is a list of the recommended screw torque settings for most rifle parts, like action screw torque. These come from a lot of different sources (including manufacturers on the phone), but one great one is Brownell’s “Torque Specifications for Gunsmiths” Article.  As that article explains, these specs are subject to change as companies change their manufacturing processes, materials, and design.  However, many people believe consistent torque is at least as important as the actual number of inch/pounds (especially when talking about action screws).  Here is an excerpt from that article that ...

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Detachable Magazine Dimensions & Max COAL

The table below contains the maximum Cartridge Overall Length (COAL) for popular detachable magazines for rifles.  This is important to consider when picking a rifle cartridge to ensure you have enough clearance to “chase the lands”, which just means as your chamber throat begins to naturally erode from use you seat your bullet further and further out so that it maintains the same relative position with the rifle lands.  Many people start with their COAL almost maxed out in their magazine, and as their chamber throat starts to wear they are forced to choose between loss of accuracy from not ...

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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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Custom 7mm Rem Mag

I recently had a custom rifle built that was chambered as a 7mm Remington Magnum. I plan to use it as a dual-purpose rifle: Precision rifle matches (target shooting out to 1000 yards) Hunting (primarily whitetail & mule deer and the occasional wild hog) I did a ridiculous, almost embarrassing amount of research before landing on the 7mm Rem Mag cartridge. After losing a deer last year, I wanted to make sure it had enough energy to put an animal down quickly. There is no such thing as overkill. With that mindset, I actually started by looking at the 300 ...

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Practical Tips to Extend Barrel Life

With the number of “overbore” rifle cartridges popular today, barrel erosion is becoming a hot topic.  For example, competitive shooters using a 6 PPC typically replace a barrel after 700-800 rounds, and a 6.5-284 might also need to be replaced before the 1,000 shot mark.  That means the cost to keep a good barrel on the gun could be 60-70¢ per shot before we even consider the cost of components like match-grade bullets, brass, primers and powder.  In reality, short barrel life could easily double your cost per shot.  So what can we do to prolong the accurate life of ...

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