Why Caliber Conversion's?
What's Involved in a Caliber Conversion?
Mark 7 Reloading presses are engineered for relatively easy caliber changes, simplifying the conversion process for users. When switching calibers, it’s important to consider all key components of the press, including the Bullet Feeder, Case Feeder, Powder Measure, Priming System, and various press parts such as the shell plate, case feed ram, and case feed adapter. Depending on your starting and target calibers, some of these parts may remain unchanged. To assist with this process, we’ve provided detailed resources below, outlining exactly which components are needed for each caliber conversion.
Converting Your Case Feeder
Your Mark 7 11” High Speed Case Feeder comes with both large and small Output Springs, and large and small Case Drop Tubes, so the only piece that may need to change is the Case Feed Plate. The plates are available in Small Pistol, Large Pistol, Small Rifle and Large Rifle.
Converting your Bullet Feeder
Converting Priming
Your Mark 7 Apex 10 Manual Priming system comes with both large and small priming tubes, so you will not need to purchase anything new, simply switch from one to the other depending on what caliber you are loading.
Converting your Press
Depending on calibers, you may need a new Shellplate, Case Feed Ram and Case Feed Adapter. However, some calibers use the same parts. For example, while 9mm and 38 Super Comp require different shell plates, you'll be able to use the same Case Feed Ram and Adapter for both calibers.
Converting Your Case Feeder
Your Mark 7 11” High Speed Case Feeder comes with both large and small Output Springs, and large and small Case Drop Tubes, so the only piece that may need to change is the Case Feed Plate. The plates are available in Small Pistol, Large Pistol, Small Rifle and Large Rifle.
Converting Priming
Your Mark 7 Apex 10 Manual Priming system comes with both large and small priming tubes, so you will not need to purchase anything new, simply switch from one to the other depending on what caliber you are loading.
Converting Your Bullet Feeder
Converting your Press
Depending on calibers, you may need a new Shellplate, Case Feed Ram and Case Feed Adapter. However, some calibers use the same parts. For example, while 9mm and 38 Super Comp require different shell plates, you'll be able to use the same Case Feed Ram and Adapter for both calibers.
