Last year at an OC lunch in Gettysburg, I met a guy who was OCing just that same gun I believe. I thought it was pretty funny personally( I think I joked with him about those evil attack deer or something silly, since it is a gun generally used for hunting larger game such as deer), but certainly there is nothing wrong with it. OC is OC afterall.
Also last year some time I recall a post at PAFOA by a guy who strapped on his Desert Eagle .50 and OC'd around his town. A cop car stops next to him and he thinks "uh oh, here we go with the tsk tsk OC talk", but the cop was just really interested in the gun itself, so they chatted about Desert Eagles and other gun talk stuff.
Now I think if you say....OC 10 guns at once...well that may be a bit much! ( but if you need to lose weight, walking around with all that iron and lead on you would be good! Start burning that fat!)