in my opinion the trade off for the lighter projectile weights,
to gain velocity,is not always an ideal trade,
youve lost a good deal of impact inertia to gain a bit less drop,
than the heavier projectiles listed above,
and considering most game is shot at under 300 yards,
its rarely going to be too your advantage under field conditions

that 7mm-08 at 300 yards traded close to 300 ft lbs of energy retained for less than 1" of flatter trajectory

even with the 30/06 swapping from a 200 grain to a slightly lighter mass 178 grain lost impact inertial energy in exchange for little in flatter trajectory

https://www.hornady.com/bullets/rifl...20-gr-v-max#!/
7mm-08 3000 fps 120 grain .365 drag


https://www.hornady.com/bullets/rifl...78-gr-eld-x#!/
30/06 2700 fps 178 grain, .552 drag


youll rarely find a trade to a significantly lighter weight projectile beneficial, except as a way to reduce recoil.
as the lower inertial mass almost always results in less retained impact energy and less penetration and a lower ballistic coefficient
naturally theres a mathematical, trade-off point, where you can,t gain the required velocity, with the pressure curve available,
you can over do anything, taken to extremes, but a rifle bullet in the .260-.300 sectional density range will generally work well