Rifle Primers the Same
While large rifle primers are typically found in large rifle cases, they are not the same for all rifle cartridges. Some calibers call for magnum primers, while other cases require regular large rifle primers. This is because the primers in these cases are designed to ignite more enthusiastically, making them better suited for use in loads with challenging conditions.
However, you can’t assume that all primers are the same, and you should always experiment with different brands. While it might not seem like a big deal, different primers will result in different pressures. It is advisable to test different brands, so that you can be sure that your rifle is getting the right amount of power. Also, don’t forget to handle the primers carefully, as improper handling can hinder reliable operation later.
Primers are a vital component in the firing process. Without them, the powder charge would not function. In the United States, commercial ammunition uses a self-contained “Boxer” primer, invented by Edward Boxer. This design features a priming compound cup and an anvil. A priming pellet is crushed between the anvil and the firing pin, causing the powder charge to ignite.
Winchester large pistol primers
Unlike pistol primers, rifle primers are a little larger. That’s because the firing pin blow in rifles is generally harder than the firing pin in pistols. Therefore, rifle primers contain more priming compound. Additionally, rifle cartridges are typically made with more powder than pistols.
Are All Large Rifle Primers the Same?
If you’re using a reloading press, you should always try a different brand of primer. Some primers can cause a reloading press to jam, so it’s best to experiment with different primer brands. Federal primers are particularly good because they have thin cups, which compensate for the light hammer fall.
Match primers are also designed to provide consistent ignition and are reliable. They contain match grade ingredients in the explosive compound. This means that the amount of each component is more controlled, resulting in tighter groups. Match grade primers are usually copper colored, with a copper-plated cup.
The type of primer used in large rifles is important. Varminters and point blank BR shooters prefer primers with small flash holes, which reduce vibrations caused by ignition inside the cartridge case. These small flash holes make a huge difference when you’re shooting higher-level competition. This is especially important for custom-built firearms.
When selecting primers, check the depth to be sure they sit properly. They should be seated a couple of millimeters below the head of the case. This will ensure that the case head is properly supported. If it is too far below the head, the case is likely overloaded. It may even be beyond the brass yield point. If this happens, the primer pockets will loosen.