Most any big, heavy bullet will work when it's up close and personal. Back in the late 1940s, my uncle worked his cattle via an old WW II surplus Signal Corps Harley 45. The deer were used to it chugging around the pasture. I questioned his use of a GI .45 auto with pure-lead bullets on deer. His comment was, "At ten yards, that old bullet just sorta wraps around them."
You're from BATFE? Come right in! I use all your fine products!