banner logo

    home     catalogue    load data    articles/info    faq    contact    links
    A quick guide to primers    





CCI 209

Standard output


CCI 209M

Magnum primer for harder to ignite powders



Standard output


FED 209A

Standard + output. However under some conditions can produce higher than normal output.


F 615

Standard primer with a low - mild output


F 616

Standard output



Standard output


W 209

Standard output

  • It is well known that different primers deliver different energy levels. The way each company manufactures and formulates the chemical composition and configures the hardware (metallic) parts of the primer all play a major role in how the primer will deliver it's energy to the powder.

  • Shotgun primers are very sensitive to firing pin energy. This is due to the proportionally large displacement/deformation that must take place when the primers cup is crushed.

  • It is extremely difficult to pin data down to one load, where primer X will always deliver higher performances than primer Y. If all conditions are the same, the differences between primers will rarely be dangerous. It is obvious that if the load you are using is already running at the maximum level with primer X, it would be unwise to merely changed to primer Y and continue loading. This is also true for any change in other components or procedure.

  • Once any component or procedure is changed, the combination will react differently. The proper way to proceed is to reduce the load by about 0.5 - 0.7 grains, and then confirm the performance by measuring the velocity or sensing the recoil/flight time. The re-loader can then adjust back to the original velocity or recoil level by increasing or decreasing the charge mass, or by adjusting to a stiffer/softer wad, or decreasing or increasing the crimp.

Back to top of article

home | catalogue | load data | articles/info | faq | contact | links


Web Design by IWD
 © Copyright 2007 Buck Ball & Slug. All rights reserved.
 Revised: 15/11/08