There is a website with detailed weapon stats, charts, mechanics, comparison tools, damage multipliers, and more! Check it out at Sym Game Science (formerly Symthic).

It’s a great resource to help find the perfect weapon for your play style.

The only weapon I’ve found which is not accounted for is the General Liu in bolt-action mode. (This is the only non-scout rifle with a sweet spot, and has a damage profile identical to the Gewehr 98).