CCI Bench Rest Small Rifle Primers

Manufacturer:

CCI (Cascade Cartridge Inc.)
Based in Lewiston, Idaho, USA – a leading primer manufacturer known for consistency and quality.

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Primer Type:

Small Rifle Bench Rest Primer
Designed for precision rifle shooting, particularly in disciplines like benchrest competition, varmint hunting, and long-range target shooting.

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Primer Size:

Small Rifle (0.175″ diameter)
Intended for cartridges requiring small rifle primers, such as:

• .223 Remington / 5.56 NATO

• .204 Ruger

• .17 Remington

• 6mm ARC (some loads)

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Benchrest Quality Features:

1. Match-Grade Consistency:
   Every lot is individually tested to extremely tight tolerances in terms of:

   • ignition delay

   • flame temperature

   • charge weight

   • cup thickness

   • sensitivity

2. Selected Materials:
   Only the most consistent primer cups and anvils are used in BR-series primers.

3. Hand-Sorting:
   Components are often hand-inspected and sorted for consistency.

4. Reliability in Harsh Conditions:
   Designed to resist degradation due to moisture, temperature variation, or storage conditions.

5. Reduced Shot-to-Shot Variation:
   Improves accuracy by reducing inconsistencies in ignition timing and burn characteristics.

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Cup Composition:

• Thicker and stronger cup than standard CCI 400 primers

• Designed to withstand higher pressures – less risk of primer flow or cratering in high-pressure loads.

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Sensitivity:

• Less sensitive than standard primers to avoid slam-fires in semi-autos or loose tolerances

• Best used with precision firing pins and strong hammer strikes

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Common Use Cases:

• Benchrest competitions

• Long-range varmint shooting

• Precision reloading of .223/5.56 and similar cartridges

• Popular among reloaders seeking extreme consistency

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Part Number:

CCI #BR-4

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Packaging:

Typically sold in:

• 100-count plastic trays

• 1,000-count (10 trays of 100) cardboard boxes

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Notable Comparisons:

• CCI 400: Standard small rifle primer – BR-4 is more consistent and has a tougher cup

• Federal GM205M: Another benchrest primer; BR-4 tends to be slightly harder and more temperature tolerant

• Remington 7½: Also a popular choice; BR-4 often edges out in consistency

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Reloading Notes:

• Always consult official reloading data when switching primer types.

• CCI BR-4 primers can slightly increase pressure over softer primers—reduce powder charges and work up slowly when changing components.

• Some rifles with light firing pins or weak hammer springs may need adjustments to reliably ignite BR-4 primers.

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