Yes bluenote I know exactly what you mean. Right now I am reading one of sci-fi series called Chung Kuo which is about future and China controls the world. There is one part in which there is a death match between two martial artists. One is a huge white guy against little Asian guy. Little guy breaks big guys arm with a kick somehow, but then big guy does a flip through the air like jackie Chan and lands on Asian guy which breaks Asian guys head, neck and back. Despite this, as you say I used to throw out books after stuff like this but I didnt this time as it is a really great and exciting book if you overlook this kind of stuff.
I hear you , I tend to just manage to overlook such things nowadays , along with place details I know to be wrong.
And much of the mass consumption and swallowing of such details by the segment of the public that still reads is attributable in many cases to differences in cultures , ever notice that the northern cultures i.e. Scandinavian , U.S. , Germanic , Slavic . British etc.etc. still think it's great fun to imbibe and belt each other around , not so along the Equator , try that crap in Indonesia and someone will take your hand off with a karambit , certain other places in the world they'll just feed your tail to the 'gators or crocs.
Anyway , enough tangental raving. I sometimes do wish that some authors would put a bit more effort into research on certain basic subjects at times , some of them being authors I really like(d). Edward Abbey being one.
An author that's notable for extremely accurate research and storyline integration as regards firearms is Stephen Hunter , for instance each of the characters supporting Swagger in 'Pale Horse Coming'' is based upon a famous figure in the firearms community , Bill Jordan ( LEO and gunfighter extraordinaire) , Jack O'Connor ( gun mag writer and early proponent of the high velocity rifle movement) , Elmer Keith ( father of the .44 mag , legendary shot and all round Western figure) Audie Murphy , Col Charles Askins.
If you haven't read any of Stephen Hunter's work then check it out , you might like the Earl and Bob Lee Swagger characters.