Hornady load data pdf

I’ve been drinking the 300 BLK Kool Aid for a while now, and one of the reasons is that even though the factory fresh ammo is scarce I can cook up as

I’ve been drinking the 300 BLK Kool Aid for a while now, and one of the reasons is that even though the factory fresh ammo is scarce I can cook up as much as I want from old 5. 56 brass and readily available components. I’ve been drinking the 300 BLK Kool Aid for a while now, and one of the reasons is that even though the factory fresh ammo is scarce I can cook up as much as I want from old 5. Hornady load data pdf figured it would be a good idea to put that into article form so I can talk a little about why I chose the components I did and how I got to my current load.

First things first: a standard disclaimer. Reloading ammunition is an inherently risky activity. I highly suggest you start with a lower load and work your way up as you become comfortable. Use this load at your own risk.

Experienced loaders will notice that I’m using a pistol powder for a rifle load. Which, normally, is a big no-no as pistol powders burn much too fast. But since there’s really almost no case volume left in the 5. 56 case once you cram a GIGANTIC . CCI makes a primer specifically for 5. 41, and the reason for the difference is that the primers are a little stiffer. The floating firing pin in the AR-15 rifle makes it possible to have a slam fire situation under the right conditions, and stiffer primers reduce that probability.

400 primers and not so much as a single slam fire has occurred with either 5. 56 or 300 BLK loads. Plus they’re cheaper, and so am I. Let’s talk about powder weight. 150 grain projectiles is somewhere around 18 grains of H110. At 18 grains everything starts to wear out quicker and the load becomes dangerous.

There’s no real good load data for 300 BLK yet for the bullet weights I’m using, so since 300 Whisper is a lower pressure load one assumes it to be safe to use interchangeably. So, being the cautious guy I am, I started my load at 11 grains of H110. 11 grains is sufficient to cycle the action. Plus, the light charge makes the recoil as gentle as the morning breeze and keeps the wear and tear on the parts to a minimum.