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.)