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CCI Primer Info and what CCI actually shows on their web site.
CCI® STANDARD RIFLE AND PISTOL PRIMERS
These are the “bread-and-butter” of reloading, the most commonly called-for primers in reloading recipes. CCI standard primers are remarkably clean-burning, leaving primer pockets cleaner and extending the time between pocket cleaning. That’s a huge benefit for progressive reloaders. They are more sensitive and easier to seat than older CCI primers, and engineered for smooth feeding in automated equipment.
Clean-burning initiator compound
Larger “sweet spot” for guns that produce
off-center strikes
Easier to seat than ever before
Improved sensitivity for “critical-need” loading
Most reloading for standard size cartridges
CCI® MAGNUM RIFLE AND PISTOL PRIMERS
Some real-world shooting conditions require more aggressive initiation than provided by standard primers. Large cases, cold weather, and certain propellants often require a hotter primer flame and a longer burn. CCI Magnum primers offer you that edge, plus you get all the attributes that make all CCI primers so great.
23 percent hotter flame than standard primers
Increased flame duration
Initiator compound engineered to ignite
ball/spherical propellants
Improved sensitivity for “critical-need” loading
Large capacity cases
Heavily-deterred propellants
Ambient firing temperatures below 20° F
Usage Note: Use Magnum primers only where
called for in published reloading data
CCI® No. 34 and No. 41 MILITARY RIFLE PRIMERS
Military-style semi-auto rifles seldom have firing pin retraction springs. If care is not used in assembling ammunition, a “slam-fire” can occur before the bolt locks. The military arsenals accomplish this using different techniques and components—including different primer sensitivity specifications—from their commercial counterparts. CCI makes rifle primers for commercial sale that matches military sensitivity specs that reduce the chance of a slam-fire when other factors go out of control*. If you’re reloading for a military semi-auto, look to CCI Military primers.
*Effective slam-fire prevention requires more than special primers. Headspace, chamber condition, firing pin shape and protrusion, bolt velocity, cartridge case condition, and other factors can affect slam-fire potential.
Mil-spec sensitivity
Initiator mix optimized for ball/spherical propellants
Available in large (No.34) and small (No. 41) rifle
Use the same data as CCI Magnum primers
Military-style semi-automatic rifles
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