Guide · 2 min read
Rate of fire and range
Two of the most quoted numbers on any spec sheet are also among the most misunderstood. This guide explains what they measure and why sources disagree.
Cyclic rate
The cyclic rate is the mechanical speed at which an automatic weapon cycles, expressed in rounds per minute (rpm). It describes how fast the action works, not how many rounds are actually fired in a minute: no magazine or belt lasts that long, and barrels heat quickly.
Cyclic figures vary widely by design. The MG 42 is historically known for a very high cyclic rate, while many rifles such as the AK-47 sit around 600 rpm. Gas settings, ammunition and wear can shift the value on a given weapon.
Sustained and practical rate
The sustained rate is the rate a weapon can keep up over a longer period without overheating or wearing out the barrel, usually far lower than the cyclic rate. Practical rate also accounts for reloading and aiming. Machine guns such as the Browning M2HB are often documented with both cyclic and sustained figures.
Effective range
Effective range is the distance at which a weapon can be expected to achieve its intended effect with reasonable probability. It depends on the target (a point target versus an area), the sighting system, the ammunition and the definition the source uses.
For guided weapons such as the Javelin, the figure usually reflects the engagement envelope of the guidance system rather than how far the projectile can physically travel.
Maximum range
Maximum range is the furthest distance a projectile can travel, typically at an optimal elevation. It is always much greater than effective range and is rarely relevant to how a weapon is used, which is why ARSENALIS sheets focus on effective range.
Why figures differ between sources
Manufacturers, armed forces and reference works use different test conditions, ammunition, barrel lengths and definitions. A carbine and a rifle variant of the same family can show different numbers, and marketing material may quote best-case values. ARSENALIS records the value it can attribute to public sources and leaves a field empty when sources are unclear. See data sources and methodology.
FAQ
- Is the cyclic rate how many rounds are fired per minute?
- No. It is the mechanical cycling speed of the action. Real-world rates are much lower because of magazine capacity, reloading and heat.
- What is the difference between effective and maximum range?
- Effective range is where the intended effect can reasonably be achieved; maximum range is simply how far the projectile can travel.
- Why does the same weapon show different ranges in different sources?
- Sources use different ammunition, barrel lengths, target definitions and test conditions, and some quote best-case values.
Educational and historical overview based on public sources. See data sources and methodology.