[45suited]

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The justification:

You have 1000 chips on the button. You raise to 300, and someone comes over the top, you are now risking 700 chips to call and win 1350 giving you 2:1 odds. There are pretty much no hands that are much worse than a 2:1 dog against any opponents range.

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To me the part of the justification that is lost is what happens when you get flat called and whiff on the flop, which is just as important. I push in spots like the OP all the time.

There's no point giving hope to someone who's got a mediocre hand by just raising. Plus, you do get called by hands that you crush, since many people can't see pushing hands that strong.