Likely and I’ve never used them. I can say the Sierra 55gr blitzkings are down right nasty and very accurate.
That said I’ve generally taken care of Fox with subsonic 22s. Not that I’ve shot many, only a couple. One with a quiet segmented that got away leaving some blood and never saw it again. One with a segmented subsonic CCI and it piled up not far away.
I mostly shoot ground hogs (or squirrels), which are about the same body mass I have killed quite the pile, mostly with CCI segmented quiets, one with a CCI subsonic quiet and, a few with CCI 45gr LRNHP Suppressor and several with Winchester 42gr LRNHP subsonics.
None with segmented bullets have gotten away. With the CCI and Win LRNHP the only ones that have gotten away I am fairly confident were either misses or bad hits. A couple of the “bad hits” I am pretty sure they crawled off to die. 50/50 I ever saw what I thought was the same ground hog again. Only one did I “autopsy” it and notice what looked like an old wound (definitely a bad hit, not in the vitals) where I am pretty confident it was the same one I had wounded weeks before. I look over every one I kill. But of course I could have missed signs of one being wounded.
Only 4 years I’ve been killing them. One at my old house, about half a dozen at my current house the first year, 4 last year and 2 this year so far for sure dead, toss the body in the woods. Possibly another 4-5 the last 3 years that might have crawled/ran away and died in their holes or under a shed (one I am pretty sure did die under a shed based on the smell).
Anyway. If I could I’d be shooting them all with a suppressed 223. But sure as heck can’t safely use a centerfire where I live on 5 acres. Even suppressed it would also draw some negative attention from the neighbors in a way a suppressed 22lr won’t.
CCI segmented subs seem to be the most effective on ground hogs, raccoons and fox of any 22lr I’ve tried (never shot one with a minimag, stinger, velocitor or other HV or fast LRNHP 22lr). But it makes me nervous running that through a can. CCI 45gr LRNHP suppressor is the next best, but I haven’t been able to find any through the pandemic and I have precisely 13 rounds left. Winchester 42gr works fine and I’ve got 4 boxes left. So that’s what I use.
PS I’ve shot one raccoon on the loose. Several in traps. All with various 22lr. I have shot one Fox with a .223 at about 70yds from a 20” barrel AR, using AO 55gr Sierra blitzkings. This wasn’t on my property. Not what I’d use if I was after the hide, but certainly killed it DRT. Small entrance. Shattered the ribs on the near side, pulped everything in the chest cavity, exit hole about the size of my 9yr old’s fist.
