70g Nosler ballistic tip and 85g Sierra bthp.
A large cat may have a super frangible bullet blow up on the scapula or heavy rib. The ones I called in were within 50 yards, and they are bad about sneaking up right behind you, so consider your setup carefully. When calling, you had better be ready to take whatever shot, at whatever angle you are presented with. I have seen them come in and sit down, and others come in and take one look and disappear with an occasional glimpse between bushes as they are walking off. My calling rifle was a 22/250 AI with Sierra 55's and a 243 Win with Sierra 85g BTHP. Calling stands, we made ours 45 minutes at a minimum with fresh cat tracks in the sand washes. I put a Turkey feather on a string with an alligator clip on a low-hanging tree branch. Net Camo face mask and camo gloves, camo gun a given. I used a raspy, coarse hand call with deep guttural sounds.
We rode mules, and used hounds, also in Az years ago. 22 Mag, 40g Win Hp, Ruger Single Six. A 30/30 is like using a 458 Winchester magnum. Lions are rough on new calf crops.