No matter what shoulder fired weapon (short of a Carl Gustav) you shoot, you can't hit a fully grown reptile like that one just any old where and expect to stop it. Maybe you will, maybe you won't, but if you fail...
Far as I'm concerned, anything not crew served is undergunned for a dinosaur like that one. And no, in fact I
don't have a sense of adventure.
lpl
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http://www.youtube.com/watch?v=jRiNMBGb9pY