.54 cal. round ball is only 230 grains or about the same as a standard projectile for .45ACP
, And a .25-06 is half the weight of the .45 ACP projectile, but will slam deer. It's not the weight of the projectile alone, it's the weight and the velocity. A baseball weighs 5 ounces or 2175 grains, but even a 95 MPH fastball would probably not kill a deer.
According to a comparison of the GOEX data and the Hodgdon Reloading manual if you want equivalent modern metallic cartridges..,
The .54 round ball with 100 gr of 2Fg is equivalent to some handloads for a .35 Remington with a 220 grain projectile
The .50 round ball with 100 grains of 2Fg is equivalent to a 170 grain .30-30, with 80 grains of 2Fg is equivalent to a .38-55
The .45 round ball with 90 grainsof 3Fg is equivalent to the 6.5 Carcano (see JFK assassination)
AND the .40 round ball with 60 grains of 3Fg out performs the .25-35 Remington, and is equivalent to the .30 carbine.
The problem you get with such modern comparison is the bullets don't do the same as lead round ball, and not the same as lead alloy round ball..., the holes are bigger at the beginning in each case when using round ball, and the deformation is different too.
LD