Factory Ammunition Ballistics Information.
The links below will give you the majority of information needed to assess, compare, and evaluate factory produced ammunition from multiple manufacturers.
ammo.com
caliberatlas.com
hornady.com
ballisticdata.com
BallisticsCalculator.io Calibers
ballisticscalculator.io
ballisticengine.com
Information for Handloaders.
Hornady Handbook of Cartridge Reloading
hornady.com
Hodgdon Reloading Manuals Library
hodgdonpowderco.com
Powder & Lead Reloading Manuals
powderandlead.net
Sierra Bullets Reloading Manual
sierrabullets.com
speer.com
nosler.com
Lyman 51st Edition Reloading Handbook
lymanproducts.com
Lee Precision Modern Reloading, 2nd Ed.
leeprecision.com
federalpremium.com
barnesbullets.com
bergerbullets.com