CCI #41 5.56 Military Primers (1000)
CCI Primers are tested and improved regularly. As a result, today’s CCI primers are more sensitive, more accessible to sitting, and compatible with advanced and automated loading equipment than ever before. For the cleanest possible burn, they use modern non-corrosive and non-mercuric initiator mixtures.
A slam-fire is less likely when using Number 41 Mil-spec primers because US military specifications make them. Although they’re made for semi–auto rifles in the military-style, the data they use is the same as that found in CCI magnum primers.
Additionally, slam-fire prevention requires more than the use of a standard mil-spec primer. The slam-fire potential can be affected by various factors, including headspace, chamber condition, firing pin shape and protrusion, bolt velocity, and case condition.