Type: Large Rifle Match-grade primer

Manufacturer: Federal Premium / Federal Cartridge

Purpose: Designed for precision rifle reloading where extreme consistency is required

“M” designation: Indicates Match — each primer is manufactured and inspected for tighter tolerances than standard primers

Primer size: Large Rifle

Cup hardness: Slightly softer and more uniform than many standard primers (favored for bolt-action precision rifles)

Ignition consistency: Very low velocity deviation when paired with consistent powder charges

308 Winchester

.30-06 Springfield

6.5 Creedmoor (with Small-primer brass)

.243 Winchester

Other Small-rifle-primer cartridges

More uniform flame front

Reduced standard deviation (SD) and extreme spread (ES) in muzzle velocity

Improved long-range accuracy potential

Popular in:

• F-Class

• PRS (Precision Rifle Series)

• Benchrest-style precision shooting

Store in a cool, dry place, away from powders and heat sources

Avoid crushing, oil contamination, or static discharge

Never substitute Large Rifle Magnum primers without adjusting load data

Always follow published reloading manuals (Hodgdon, Sierra, Nosler, etc.)