Discussing one's stockpiles (of any kind) in public, as the internet is, is akin to discussing the amount of gold coin one has sewn into the cuffs of your shirt-tails whilst upon a pirate ship.
I don't think gatormba was exactly revealing the location of some gigantic treasure. I find it hard to imagine someone tracking him down so that in the event of a SHTF they can drive across the state/country to try and grab 500 rounds of 45 ACP.
The folks known to be in possession of 500 rounds each of .45 ACP and 7.62 would be the exact ones that I would leave alone during SHTF.