Primers for the CCI long rifle magnum like the cci 250 primers are subjected to ongoing testing and development. As a direct consequence of this, CCI primers used today are more sensitive than ever before, making them easier to seat and more compatible than ever before with progressive and automatic loading equipment. In order to get the cleanest burn possible, they use cutting-edge initiator blends that are not corrosive and do not include mercury. They use current initiator blends that are not corrosive and do not include mercury.

There are shooting conditions out in the real world that call for a more forceful ignition than what is offered by ordinary primers. Primers often need to have a longer burn time and a stronger flame because of factors such as large cases, cold conditions, and specific propellants. You gain that advantage, in addition to receiving all of the characteristics that make all CCI primers so great, when you use CCI Magnum primers.