Tiornu wrote:The best heavy DP gun was the US 5in/38.
The best large automatic cannon was the 40mm Bofors.
The best light automatic cannon was the 20mm Oerlikon.
yellowtail3 wrote:I would say the 5"/38cal was a good AA gun, paired with that magical shell.
for pre-war AA weapon... the 5"/25cal looks to be a pretty capable AA weapon, and not half-bad dual-purpose gun, at likely battle ranges.
Any opinions on the USN's 5"/25cal?
40mm Bofors with a proximity fused shells, thats my vote
dunmunro wrote:The fact is that medium calibre DP guns were not very effective in downing aircraft. The USN 5"/38 probably got more than any other similar gun, but it's kill rate was highly inflated. One of the problems with trying to get a handle on the actual kill rate, is that, by definition the 5"/38 was being used as an area weapon, with many ships with the same gun size engaging the same targets. Over claiming was the inevitable result. Overall the 5"/38 probably downed about 1 aircraft per 2000 rds of MT fuzed ammo, and I would suspect that this kill rate was typical for all similar sized weapons in WW2.
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