I prefer the Hodgdon yearly magazine loading manual because they normally have the latest new cartridges. From there, I use the powder manufactures manual for the powder I intend to use.
Bullet manufactures tend to show their bullets perform better than others and often times lower the powder charge of their competition to make their powder look better.
All are very conservative because of different barrels, chambers and loading process. Just because a manual shows a load as Minimum doesn't mean It is in your rifle/pistol.
J E CUSTOM