Yes. You will definitely get much more penetration from lead substitutes.A bit more anecdotal follow-up for y’all. A week ago monday I shot a 180 lb boar hog at ~10 yards with 12 gauge cylinder bore 000 tungsten buckshot, I shot him, purposely, with a side shot to the head. Wound channels were thru-and- thru and the entire skull was grossly crepitant. It was a floppy, bloody bag of bones.