Same powder different name?

[Na-vah-duh]

I have some older Winchester 540 powder. Google search shows its the same as hs6.

What other powders are the same but have different names? Why is the load data different?

Hp38 <> win 231
H110 <> win 296

[Bill Steele]

Recently I was on Hodgdon reloading data website and it appeared they had harmonized all the HP38/W231 and H110/W296 loads so they are now the same, at least with the calibers I had visited.

[Divernhunter]

H-110 and Win296 is suppose to be the same but not across my chrono. H-110 gives me more speed with the same charge and all else being the same.