If you're seriously considering building a 338 lapua magnum , you currently know you're getting into something that's a massive step up from your standard bolt-action rifle. It's a project that will sits right in that "sweet spot" between the typical. 30-caliber rounds and the monstrous. 50 BMG. I've spent a lot of period behind various platforms, but there's some thing uniquely satisfying regarding assembling a rifle that may reach away well past a mile but still strike with the pressure of a shipment train.
It's not just about buying a number of expensive parts and slapping all of them together, though. A build like this requires some real idea because the forces involved are fairly intense. You're dealing with high pressures, significant recoil, and a heavy projectile that demands a quite specific setup to remain stable over long distances. Here is definitely the lowdown on how to approach this build without having losing your mind—or all of your lunch cash.
Starting along with a solid actions
The actions is the coronary heart of the beast. When you're building a 338 lapua magnum , you can't just use any old long motion you have installing around. This cartridge is long, beefy, and operates from high pressures. You require a dedicated magnum action, often known to as a "Lapua-sized" action.
Many people start with a Remington 700 style action because the aftermarket replacement support is endless, but you have to guarantee the bolt face may be the right diameter (. 590" is standard intended for the 338 Lapua). Personally, I'm a fan of custom actions like those from Terminus or even Zermatt. They arrive with integrated 20 MOA or thirty MOA rails, which is a lifesaver when you're seeking to dial in shots at 1, 500 yards and over and above. You want something with a smooth bolt throw yet enough "meat" in the steel in order to handle the thump of that big casing.
Obtaining the right barrel or clip length and angle
If you're going to invest the money on this caliber, don't skimp on the clip or barrel. The 338 Lapua needs room in order to breathe. I discover guys trying in order to build "compact" variations of these, and honestly, it's a bit of a waste. You desire to maximize the velocity of those heavy 250-grain or 300-grain bullets.
Intended for most builds, a 27-inch or 28-inch barrel is the regular. Some guys even go up in order to 30 inches in order to squeeze every last bit of FPS out from the powder burn. As for the twist price, a 1: nine or 1: nine. 5 twist is usually the ideal solution in the event that you plan upon shooting those weighty 300-grain Berger or even Hornady ELD-M principal points. In case you go too slow on the perspective, you won't support the long projectiles, and your groups will look such as a shotgun design at 500 yards.
Also, think about the contour. This isn't a mountain rifle. You need a heavy barrel—something as an MTU or a heavy varmint profile. The additional weight helps soak up recoil and prevents the clip or barrel from heating upward too quickly, which is usually a big-deal when you're burning 90+ grains of powder every time you draw the trigger.
Managing the recoil with a framework
Let's become real: the 338 Lapua can be a bit of a punisher if the rifle is as well light. When building a 338 lapua magnum , the share or chassis a person choose is your primary interface with regard to managing that power.
I'm a huge enthusiast of aluminum framework systems for this particular specific caliber. These people offer a level of modularity and rigidity that traditional wood or basic fiberglass shares just can't match up. Something like an MDT or a Masterpiece Arms framework allows you in order to add weights to the forend. This might sound counterintuitive—why make a gun heavier? —but in the world of extreme long range, weight is your greatest friend. A 20-pound rifle is much more enjoyable to shoot than a 12-pound one particular when you're shooting a Lapua.
Plus, a framework usually posseses a changeable cheek riser and length of draw. Getting an ideal "weld" with your own face on the particular stock is non-negotiable for consistent long range accuracy. If you're straining your throat to see through the scope, you're going to have a bad day.
Don't forget the muzzle brake
When there is a single piece of advice I give everyone building a 338 lapua magnum , it's this: buy the best muzzle brake pedal you can discover. Shooting this good quality unsuppressed and without a brake will be a recipe with regard to a bruised make and a nasty flinch.
You want a large, multi-port brake pedal that directs these gases outward plus backward. It's going to be loud—like, "everyone at the variety will hate you" loud—but it becomes a violent kick into a controllable push. Some associated with the newer "bastard" style brakes or the specialized ELR brakes can reduce felt recoil by 50% or more. If a person have the budget and the paperwork, a suppressor is also better, though it adds a great deal of length for an already long rifle.
The significance of high-end glass
You can't hit what you can't see. This might sound like a cliché, but it's 100% correct here. When you're building a 338 lapua magnum , your budget for the particular scope should probably be close to exactly what you spent upon the rest of the rifle combined.
You need a scope along with a wide range of internal height travel. Since you'll be shooting from extreme distances, a person might be turning that turret upward 40 or fifty MOA. A 34mm or even a 36mm tube will be usually better mainly because it allows with regard to more adjustment variety. Search for something in the 5-25x or 7-35x magnification variety. Brands like Nightforce, Vortex (the Razor line), or Kahles are the typical suspects here with regard to a reason. These people can handle the sharp, heavy recoil of the 338 without the internals shaking loose.
Trigger and finishing touches
The trigger is exactly where the magic occurs. I usually opt for a TriggerTech Diamond or a Timney. You want some thing crisp with absolutely no creep. When you're trying to stay steady on a target that appears like a postage stamps through the zoom lens, a heavy or gritty trigger may pull you off your mark every single time. I actually usually set mine around 1. 5 to 2 lbs for a long range rig such as this.
Lastly, consider your own magazines and base metal. Most building a 338 lapua magnum tasks use AICS-pattern mags. Make sure you get the "CIP" duration magazines if you plan on launching your bullets out long to get them closer to the rifling. Regular magnum magazines are often too brief for your high-BC 300-grain bullets, which may really cramp your own style when reloading.
Why it's all worth it
Building this particular rifle is a journey. It's expensive, the constituents are heavy, and the ammo costs plenty of to make your wallet cry. But the first-time you're out on a private range or even a dry river bed, and a person hear that clink on a steel plate a thousand yards aside after a long flight time, you'll be familiar with appeal.
The 338 Lapua Magnum is definitely a legendary cartridge for a reason. It bridges the gap between amateur shooting and severe long-distance ballistic technology. By taking your period and selecting the right elements during the construct, you end upward with a device that is effective at far more than most shooters may ever be. Simply make sure you bring some good ear protection plus a sturdy bipod—you're going to need them.