A hearty AMEN to .351's comment. I hunt with dogs, I have also been 'stuck' with having to use buck on many occasions due to lease agreements. Frankly, my honest observation is that it stinks. Oh, yeah, it'l kill, trouble is that the animal all too often gets way away and doesn't leave a blood trail whatever. I recall one exceptional buck that I hit hard TWO times, once in the full frontal chest area as he struggled to push his way thru heavy briars, and secondly broadside at no more than 25 yards. Both shots put that deer on the ground!...both times he got up and hit 'fifth gear!!! There was no blood trail, and he just kept going. Now that deer had several good hard driving Walkers on his ass, but to the day I depart this world I'll regret not grabbin' the auto rifle I had sitting in my truck when I first took that stand.
Neither hit was farther that 30 yards, and I'm sure that the deer died, it was just that buck is so ineffective a stopping round that he managed to keep going. The area was so thickly overgrown that recovery was impossible as the dogs quickly pick up other deer............
I still use that old A/5, but now it's got a Hasting's rifled tube stoked with sabots. I'd rather miss completly than re-do that event!