Another bonus of powder coating, is that it lets you eliminate or substantially reduce lube grooves, eliminate gas checks, and create much more compact bullets (all else being equal). As such, you get bullets that are more easily stabilized by slower rifling twist rates, and more case capacity.
Here's an example, using 300 gr WFN bullets designed for a short-throated .444 Marlin levergun:
First, a 'standard' version designed for a Hornady gas check.
You end up with a finished weight of about 307 gr (w/ GC and lube), and a seating depth of 0.507" (GC adds 0.017").
(.432-.433" final diameter)
Note: This design is already quite 'compact' for a .44 caliber 300 WFN. Most designs have more taper in the nose and larger lube grooves, making the bullet even longer than this example.
But as a PC bullet, the seating depth shrinks to 0.452" (about 0.002" of coating added to base), increasing case capacity by about 0.5 gr (depending on powder choice). Finished weight would be about 304 gr, with a higher theoretical ballistic coefficient than the standard bullet.
Everything from the crimp groove forward remains the same. The only changes are to the body and shank.
(.432" final diameter)