Charcharo said:
A T. Rex is not that much bigger then a hippo mass-wise. It was 4-5 tons. So as big as an elephant?
I know a single 5.56 wont stop it (less it is fired by someone good

) ... that is why I said like 30.
Oh, right, I thought you meant a .30 calibre weapon.
Charcharo said:
Dont underestimate even inaccurate volleys of small arms fire. And the effect on the dinosaur of hearing gunshots and extreme pain. Id say the police will handle it.
Wouldn't want to depend on 5.56mm against a T-Rex, though. 5.56mm won't reliably stop a charging bear. OTOH, presumably the local police would have sharpshooters with more powerful weapons even normally.
And this is assuming that the thing is in a position to get you. Doesn't matter what gun you have, if you are flying over it in a helicopter, it can't get you until it learns to shoot back.
Of course, the police would "win", in the sense that it ends up dead, but for police, winning means nobody gets hurt, dinosaurs excepted. If a dinosaur is running loose in a city, I don't want to hear that it will die of injuries, I want to hear that it goes down before injuring anyone, preferably without property damage.
Charcharo said:
The mercenaries in JP 2 and 3 were cretins. A 50. shot should to the head should kill the Spinosaurus and T. Rex easily.
Yup, .50BMG, M203, Minimi (I know, 5.56, but lots more of them), AT-4...some legal problems getting some of those, but your company breeds dinosaurs. Take it seriously.
I particularly like the bit in JP2 where the guy wanders off by himself to go the the toilet, tells one person who spends his time listening to his headphones (while sitting on the very edge of the group facing inwards) and doesn't initially mention to anyone he's missing when they all move off.