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Cci

CCI NO 41 PRIMER FOR 5.56MM 100 CT

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Number 41

Mil-spec primers made to U.S

Military-style Semi-auto

Rifles and intended to reduce

Modern Non-corrosive

Non-mercuric initiator mixes for a

More Sensitive

Easier to seat than previous

Compatible Progressive

Progressive and automated loading equipment

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SKU: 1-076683000019

Overview

Designed for reloading 5.56mm ammunition, these primers are intended for use in military-style semi-auto rifles and come in a 100-count package. CCI describes them as mil-spec Number 41 primers, built to the same specifications used by the U.S. Military and aimed at reducing the chance of a slam-fire. They are also presented as easier to seat and more compatible with progressive and automated loading equipment, which suits high-volume reloading setups. CCI notes that slam-fire prevention depends on more than primer choice alone, so proper headspace, chamber condition, firing pin setup, and load data still matter.

Why Hunters Choose the Cci

More Sensitive

Easier to seat than earlier

Compatible Progressive

Progressive and automated loading equipment

Uses Modern

Non-corrosive and non-mercuric initiator mixes

Number 41

Mil-spec primers follow U.S. Military

Designed Reduce

Chances of a slam-fire

Key Features

  • Number 41 Mil-spec primers made to U.S. Military specifications for 5.56mm loads.
  • Designed for military-style semi-auto rifles and intended to reduce slam-fire chances.
  • Modern non-corrosive and non-mercuric initiator mixes for a cleaner burn.
  • More sensitive and easier to seat than previous CCI primers.
  • Compatible with progressive and automated loading equipment.
  • Pack contains 100 primers.

Best Used For

  • Reloaders using progressive or automated equipment who want easier primer seating
  • Owners of military-style semi-auto rifles seeking Number 41 mil-spec primers
  • Handloaders following published load data for 5.56mm applications
  • Shooters prioritizing primers designed to reduce slam-fire chances in compatible setups

Specifications

Caliber5.56mm
CompatibilityProgressive and automated loading equipment
Count100 ct
Intended UseMilitary-style semi-auto rifles
Non CorrosiveYes
Non MercuricYes
NotesUses the same data as CCI magnum primers
Primer TypeNo. 41 Mil-spec primer
Slam Fire ReductionYes
WarningsEffective slam-fire prevention requires more than mil-spec primers; headspace, chamber condition, firing pin shape and protrusion, bolt velocity, case condition and other factors can affect slam-fire potential

Pros

  • More sensitive and easier to seat than earlier CCI primers
  • Compatible with progressive and automated loading equipment
  • Uses modern non-corrosive and non-mercuric initiator mixes
  • Number 41 Mil-spec primers follow U.S. Military specifications
  • Designed to reduce the chances of a slam-fire
  • Packaged in a 100-count supply for reloading convenience

Considerations & Trade-offs

  • Number 41 primers are intended for military-style semi-auto rifles, so they may be more specialized than standard primers for general-purpose loads.
  • CCI notes that slam-fire prevention depends on more than primer choice; headspace, chamber condition, firing pin geometry, bolt velocity, and case condition also matter.
  • The product uses the same data as CCI magnum primers, so load selection should follow published reloading data rather than assumptions based on primer type.
  • Pack size is 100 count, which is practical for testing or smaller loading runs but may not suit high-volume reloading needs.

Suggested Comparisons

  • Reloading primers
  • Mil-spec primers
  • 5.56mm reloading components
  • Progressive reloading accessories

Suggested Accessories

  • Reloading press accessories
  • Primer tray
  • Reloading manual
  • Case cleaning supplies

Frequently Asked Questions

What is the CCI No. 41 Primer intended for?

It is a 5.56mm primer designed for military-style semi-auto rifles.

How many primers are included in this package?

This package contains 100 primers.

Does CCI say these primers help reduce slam-fire risk?

Yes. The No. 41 Mil-spec primers are made to the same specifications of the U.S. Military and are described as reducing the chances of a slam-fire. CCI also notes that slam-fire prevention depends on more than the primer alone.

What does CCI say about the primer mix?

CCI says these primers use modern non-corrosive and non-mercuric initiator mixes for the cleanest burn possible.

Is there any load data or reloading guidance included?

The product text says to check your reloading manual or a powder manufacturer’s website for load data. It does not provide specific load data here.