Golden angle is 27, even though they have different angles the trips and dual hit planes at 27

The triple 6.1" A and dual 4.7" A share the same GA.

NLD 6.1" all have a different GAs but A (the guns you are supposed to use for AA) are 27.

Odd. Trainworld has the Dual 4.7" as 27 degrees and the Trip 6.1" as 31 degrees. I understand a few degrees of variance still hits the "Golden" spot but I don't think the Trip 6.1's at 27 would still be optimal?

Trainworld is horribly outdated....

The real GA for the Dual 4.7s A version and the 6.1 Triples A version is either 26 or 27.
27 is for planes that are in mid range of your aa. 26 is for planes in near or max range of your AA.  

Sorry to hijack the thread, but where do you go for information if Trainworld is out of date?

Since you can't use trainworld, try lookin around the forums usually in either Tips/Tactics or General forums. There if you look hard enough and maybe old data, you should be able to find whatever it is you need. If you ever need help just put up a thread asking your question. Theres no harm in asking. But if you don't ask, your question gets no answer. No Pain no Gain.