My experience is much like 204AR's.
My longest shot (and it was mortared in with the first two shots) is 308yds. That bullet went through a pup without expanding. I think the velocity at that point would be too slow to expand even the minute 17gr Vmax.
However, to echo 204AR's comments, when you have high volume shooting inside of 150yds with uneducated pups there really isn't anything better and more cost efficient. You won't get the high back flips and the massive explosions like you would with a centerfire, but you do get them dead.
I've always said that they would be perfect with a supressor, because the report of the rifle is very minimal.
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”Self defense is a primary law of nature, which no subsequent law of society can abolish; the immediate gift of the Creator, obliges everyone to resist the first approaches of tyranny.”
~Elbridge Gerry