.270 (my first deer and elk, and a Javelina, w/a 90 grn HP loaded to 2,000 fps).
30-30 Deer
.223 Javelina
.243 Elk, Antelope and my kids, and grand-son have all killed deer w/it, and daughter-an Antelope (she shot a gp that we covered w/a penny)
.357 in a carbine, Javelina