Get a 45 can. TBAC is super, and don't forget about the rugged obsidian.
Something that is modular and can handle a few rifle calibers ( 300 BO, 350 legend, etc) is the way to go. Some will even take 45-70.
9 in a 45 can is almost the same reduction as 9 in a 9mm can. 45 in a 9mm...