[Scorch]

Visaman, you asked a similar question several weeks ago. The answer is that in order to meet the 1,662 ft-lbs energy requirements with a 154 gr projectile, you must propel it at approximately 2,200 fps. This is because kinetic energy is calculated

1/2 Mass X Velocity squared

1/2 Mass= 77 grains / 7000 grains/pound / 32 ft/sec/sec (acceleration of Gravity- required to convert weight units to Mass units)

You can see that with a 154 gr bullet, you must achieve approximately 2,200 fps velocity in order for the equation to be satisfied. This is easily achievable. A 7X57 can do it, easily. A 30-30 can do it, easily.

As far as black powder cartridges, they pretty much max out at 1,500 fps due to the limitiations of BP as a propellant. 1,300 fps is more common. In order for BP cartridges to achieve a target energy threshold, and being limited to lower velocities, they achieve the target energy by increasing bullet weight. Assuming 1,400 fps, bullet mass must be 380 gr in order to reach the 1,662 ft-lbs of energy required. If velocity drops, bullet weight must increase to make up the difference.