Which risk increased notably in 14th-century European siege warfare because of early cast-iron cannons employing insufficient barrel reinforcement?

💡 Explanation

Catastrophic barrel rupture was increasingly hazardous because early cast iron cannons relied on inconsistent metal quality where localized defects enabled rapid crack propagation through *brittle fracture*, therefore cannons violently exploded, rather than exhibiting ductile deformation or controlled venting as with later designs.

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