Col is the distance from the base of a bullet to the ogive, or pointy end. It’s an important measurement in reloading because, along with bullet diameter and case length, it determines which cartridge cases will work with which bullets. If you’re looking to get into reloading, or are simply curious about it, understanding col is a good place to start.
Advance Tips: What Is Col In Reloading?

When it comes to reloading your own ammunition, there are many things to consider. One of the most important things is what type of powder you will be using. While there are many different powders on the market, one of the most popular is col. In this article, we will take a look at what col is and how it can benefit your reloading needs.
So, what is col? Col is a type of smokeless powder that is used in many different types of ammunition. It is a very fast burning powder that is perfect for high-pressure loads. This makes it ideal for use in things like handgun and rifle ammunition. It is also a very popular choice for shotgun shells as well.
One of the biggest benefits of using col is that it is very consistent. This means that you will get the same results every time you use it. This is important because it allows you to produce ammunition that is very accurate. It also means that you can produce ammunition that is very powerful. This is because col burns very quickly and produces a lot of pressure.
Another benefit of col is that it is very easy to use. This is because it is a very fine powder. This means that it will not clump together like some of the other powders on the market. This makes it very easy to measure out the correct amount and to load it into your ammunition.
If you are looking for a powder that is both consistent and easy to use, then col is a great choice for you. It is a great choice for both handgun and rifle ammunition. It is also a great choice for shotgun shells.
How to Determine the COL of a Round?
There are a few different ways that you can determine the COL of a round. One way is to use a caliper to measure the distance from the tip of the bullet to the base of the cartridge. Another way is to use a ruler or tape measure.
If you don’t have a caliper or ruler, you can also estimate the COL by using the following formula:
COL = (Diameter of the bullet) + (Length of the cartridge)
For example, if you have a round with a bullet that is 0.308 inches in diameter and a cartridge that is 2.8 inches long, the COL would be 3.108 inches.
Keep in mind that the COL can vary depending on the manufacturer and the type of firearm. It is always best to consult the owner’s manual or a gunsmith to determine the correct COL for your firearm.
We hope this blog post has helped you to understand what COL is and how you can determine the COL of a round. If you have any further questions, please feel free to contact us.
Frequently Asked Questions [FAQs]
COL is an important measurement in reloading because it determines how much space is available for the bullet to travel down the barrel before it hits the rifling. The COL also affects how much pressure is generated when the cartridge is fired.
COL is measured from the base of the cartridge to the tip of the bullet.
As the COL increases, the amount of space for the bullet to travel down the barrel before it hits the rifling decreases. This in turn increases the amount of pressure that is generated when the cartridge is fired.
If the COL is too long, the bullet may not engage the rifling properly and could become lodged in the barrel. This could result in a dangerous situation where the bullet could rupture the barrel upon firing. If the COL is too short, the pressure generated by the burning powder could be too high, leading to a dangerous situation where the cartridge could burst.
Some factors that can affect COL are the type of bullet being used, the type of powder being used, and the length of the barrel.
Conclusion
Based on the article, “What Is Col In Reloading,” COL is an important factor to consider when reloading ammunition. The article discusses how COL can affect accuracy, velocity, and pressure. It is important to choose the correct COL when reloading to ensure safety and optimal performance.

A. Wilcox Head is a lifelong shooter, hunter, and firearms enthusiast. Head grew up in a family where firearms were a way of life, and from an early age, he was taught the importance of firearm safety, accuracy, and proper hunting techniques.