FWIW the old WW High Impact Supremes were .50 cal.
They looked like the old BRI style of slug, but didn't zip through like they did (brother in law ran the cheaper WW BRI).
Blood trails on the reg BRI ones...............scant at best.
The High Impact Supremes............were just like their name said.
Some deer ran a little ways. Nice red trail to the dead deer.
Some I shot simply crumpled, w double lung hits not close to the spine.
They put 'em down faster than foster slugs did (on avg).
Don't think I shot a deer past 100 with 'em though.
Brother in law didn't like the lack of BT when using cheap/harder slug.
So he switched to shooting deer in the head.
He had the accuracy in his rifled M500.
And he was a cheapskate
Personally, I don't like uglying up my critters so don't do head shots.