TV, movies, media etc has a LONG history of portraying stuff as "facts" when it isn't true. Remember our early western movies with a sixgun that was never reloaded & fired 10-20 times? This stuff is just a modern version of similar attitudes from writers.
We too were watching the CSI program, and saw the glimpse of the bullet that supposedly came from that body & heard them proclaim it came from a 30-30. We also heard them discuss how the distance was over 500 ft, and only a serious hunter could make that shot. Miss Penny & I chuckled at the inaccuracies of their statements. She also cringed later when the guy called the magazine in a pistol a "clip." (That's one of Miss Penny's pet peeves.)
It's TV. It's movies. It's supposed to be entertainment. Did we walk out of the theaters after watching our favorite westerns complaining about the "never needing reloaded" sixgun? Nope, we went back to see the same stars & movies over & over again. It's just that now, writers have to try & be a little bit more believable in some stuff, so some of the blatantly obvious mistakes have been corrected, (usually). The CSI shows portray incredible science stuff that isn't actually available, but IS being studied & worked on. Or they show stuff that takes only 2 minutes, when in reality can take weeks to determine.
Are many shows on TV & in the movies anti-gun? Absolutely. Are many of the stars who use guns anti-gun? Yes. It's only when we as the consumer quit buying anything & the cost of doing business exceeds the income will anything change. But, as we all know, knowledgeable people in ALL aspects of EVERY item discussed in ANY entertainment venue are an extreme minority. I will admit I do not know every mistake in detail in every show I watch. As such, I accept the fact that I have knowledge in SOME of the stuff, but I'm a dummy in other areas.
Next look at the fact they deliver a show to the masses. And, as we all know, the masses do not know as much about firearms as those of us who enjoy firearms. I'm sure a lot of science nerds (no disrespect to anyone) can tear apart the science they portray. Or how about car chases where cars beat & bang into so many different things, yet, still manage to outrun the pursuers? We know cars usually get something broken pretty quickly in many small accidents, yet, we watch car chases for the fun of it.
My point is that there are so many different "facts" that are NEVER portrayed properly in the entertainment venue that it's a COMMON thing. Even the writers know they have stuff wrong, but they have to make the show entertaining & make the viewer want to watch. Just accept it for what it is, and fight against the ones who are so blatant in their attacks upon our freedoms.