The British pom-pom and Swedish Bofors took slightly different approaches to the same broad 40 mm problem. The pom-pom emphasized rate of fire, while the Bofors put more weight on range. Both worked within the concepts and development paths that produced them. Modern 40 mm weapons recombine many of those features, so branches that once separated can converge again.
Notable Point · 26:45-27:55
How the pom-pom and Bofors diverged, then converged
The pom-pom and Bofors emphasized different aspects of the 40 mm problem, while later weapons recombined their strengths.