In article ,
"Bjørnar Bolsøy" wrote:

It takes time to wind up and has a small projectile, so how does
the M61 really stack up against, say, the BK27 og Giat 30mm as
far as dogfighting is concerned? Even with the PGU28?
Is shot density the primary factor to look at?


Major factors a

1. muzzle velocity
2. bullet mass
3. rate of fire

They all have to work together to raise PK (probability of kill).