At such close ranges the power of penetration of roundshot was impressive, at 30 yards an 18 pound shot would penetrate four oak planks 32.5 inches thick (just under 1 meter thick), hurling a shower of splinters up to thirty yards.
Ngumganyana omfutshen ngolo hlobo amandla okungena kwembumbulu kwakunika umdla, kwiyadi ezingama-30 imbumbulu enobunzima obuli-18 yayinokugqobhoza amaplanga om-oki azi-intsi ezingama-32.5 ububanzi obukhupha ngaphantsi kwemitha e-1 ububanzi), ukuphosa ngaphandle iimvula yamaceba kubude obuziyadi ezingamashumi amathathu.