I used 500g 45-70 subs last year. Other than drop they will easily get a deer out a long way. They just don’t slow down. G1 is .44 for the bullet I was using with a minimum opening speed of 800 fps.Not sure if it’s the same guy I’m thinking of but there’s a guy smoking deer with 570gr subs in a bolt gun at like 500 yards. It’s wild