There are typewriter beaters and then there are credible scribes. Never have been many of the latter. Asking for unbiased outdoor writing or gun evaluation(s) is asking a lot; its like asking a dog guy about another breed.
Accepting that, it is not unreasonable to ask that what writers state as fact is accurate. Those who are not fall under the first heading. Retractions and corrections in small print in a subsequent edition does little to redeem sloppy work.
That is why work by authors such as Gough Thomas remain respected. I would not at all be surprised to learn that he had a final proof read & edit right before publication of his books.
There are others who have or had clear bias for a particular make of gun, gauge &/or breed of dog and who are gifted in sharing their passion(s), opinions and misadventure in a manner that it becomes literature. Some great outdoor literature is fiction, e.g., Mark Twain's works.
Poor reporting, ineptitude in researching, editing and misinformation stated as fact isn't fiction; it is junk.