powder manuels list loads by?

[atvalaska]

(handload books)i see a mix of powders ,fps etc are they listed in in the reload manuels by what? a .44 round 240 gr will have" many loads "with a list powders etc are they in a certain order? why is the 1st one 1st? (in other words) pre thanks :banghead:

 

[The Bushmaster]

?????

 

[rcmodel]

Sometimes by burn rate (fastest to slowest)

Sometimes by velocity (highest to lowest)

Sometimes oldest to newest (as they added new powders through the years.)

Sometimes, or most times, it seems there is no rhyme or reason too it though.
Probably just the order they tested them in and wrote down the results.

rc