The Remington ammunition website has a very useful feature which does EXACTLY that - - You can compare loadings of the same cartridge, or see what it says about ttwo different cartridges. Not sure, but I think there's a maximum of four in any given search.
Click
HERE for a comparison of the classic Remington Core-Lokt bullets in 150 and 170 gr. They're calling most all the hunting loads "Express" nowadays.
Two notes:
1. These results are from firings in 24-inch barrels, NOT the most common 20-inch, or the increasingly popular, even shorter barrels.
2. I ran only the comparison requested. Remington offers two other .30-30 cartridges - - a 125-gr and a 150 hollow point.
Best of luck
Johnny