Thread: Cast Vs Jacketed

Greetings @Micky Duck,
Cast lead will, as you say, give move velocity for the same charge but loads are often held down to keep pressure low and barrel leading minimal. The cast bullets will also seal the bore better than jacketed, especially if the bore is oversize as they often are. Just treat the two sets of data as if they are for different rifles.
Regards Grandpamac.