I have a 224 Clark built by Kenneth in the late 70's.He made his bullets by sizing down 6mm jackets to 224, then putting a 17 cal lead and jacket base up to form a partition type bullet that ended up being about 82 grains. That was his deer bullet. I seen a few deer killed with his round. An 80 grn pill at 3500fps is no slouch. Hornady made him a batch of 80
HP bullets also. The only negative on mine is he made them with a 9 twist,8 twist would have been great. He was a great guy to stop and talk hunting and guns back in the day.

RS