Ammunition Components & Ballistics Manufacturing worked example

Primer Assembly Capacity Calculator at 63% primer assembly line uptime: a worked example

Suppose primer assembly line uptime falls to 63%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate usable primer assembly output from assemblies per cycle, available cycles, equipment uptime, and accepted yield.

The inputs for this scenario

  • Primer assemblies per machine cycle: 1,200 primers/cycle (held at the documented default)
  • Available assembly cycles in the period: 80 cycles (held at the documented default)
  • Primer assembly line uptime: 63 % (the input this scenario stresses; the baseline uses 88)
  • Accepted primer assembly yield: 96 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross primer assembly capacity = primer assemblies per cycle × available assembly cycles.
  • Accepted primer assembly capacity works out to 58,061 primers at these inputs, and this is the headline figure for the scenario.
  • Gross primer assembly capacity works out to 96,000 primers at these inputs.
  • Capacity lost to downtime works out to 35,520 primers at these inputs.
  • Primer assemblies lost to rejects or holds works out to 2,419 primers at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where primer assembly line uptime sits at 88% and the headline result is 81,101 primers, this scenario comes in 28.41% below the baseline at 58,061 primers.
  • It computes the accepted, in-spec primer assemblies a line will produce after applying uptime and accepted-yield losses to gross cycle output. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Accepted primer assembly capacity: 58,061 primers (headline result)
  • Gross primer assembly capacity: 96,000 primers
  • Capacity lost to downtime: 35,520 primers
  • Primer assemblies lost to rejects or holds: 2,419 primers

Run it with your numbers

  • To rerun this with your own numbers, open the live Primer Assembly Capacity Calculator calculator, set primer assembly line uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.