Winchester Large Pistol Primers #7

Winchester Large Pistol Primers are a popular choice for reloaders looking for reliable ignition in large pistol cartridges. These primers are known for their consistent performance and are often recommended for use in both standard and high-performance loads.

Recommended Resources and Data

• Hodgdon’s Website for Load Data:
  For precise reloading information, visit Hodgdon’s official site.
  • Example: For 240 grain Nosler JHP bullets, both Winchester 296 and Hodgdon H110 powders provide the same load data. Both powders are made by the same company (Hodgdon) and are interchangeable for these specific loads.

Primer Discussion: Magnum vs. Standard Primers

• Magnum Primers:

  • CCI #41 and CCI #34 are often discussed in relation to magnum primers. These primers feature a hardened cup designed to prevent slamfire in military-style rifles such as the M1 and M14.
  • According to CCI, these primers are rated as magnum primers due to their sturdier construction.
  • Anvil Differences: The anvil in the Mil-Spec primers is shaped differently and set slightly less deep, which adds durability to withstand the higher strike forces from free-floating firing pins.

• General Primer Information:

  • CCI #35 is a commercial version of the military DOD primer for U.S. military ammunition.
  • For .223 Rem/5.56 NATO semiautomatic loads, recommended primers include CCI #41, 450, and BR4, particularly for use with ball powder.
  • For .308 Win/7.62×51/7.62×39 semiautomatic loads, CCI #34 and CCI 250 are good options.

Additional Primer Recommendations

For different cartridge types, certain primers are more suited to specific powders and load types:

• .223 Rem/5.56 NATO:

  • CCI #41, 450, BR4 (best with ball powder)
  • Federal 205, 205M
  • Remington 7 1/2 BR (good with ball powder)
  • Winchester WSR (good with ball powder)
  • Wolf SRM and SR223 (great with ball powder)

• .308 Win/7.62×51/7.62×39:

  • CCI #34, 200, BR2, CCI 250
  • Winchester WLR, WLRM (good with ball powder)
  • Wolf LR

Conclusion

When choosing Winchester Large Pistol Primers #7, it’s important to consider the type of load and primer compatibility with your powder choice. Always ensure you are using the correct primer for your specific reloading needs to maintain consistency, reliability, and safety in your loads.