You know there seem to be two types of Double Rifle Experts who write books. Those that learned most of what they know by trial and error and by actually loading and experimenting and those who parrot what they have read and heard from others. The former sometimes make statements based on available information that are true at the time but become incorrect as more is learned. Sometimes what works for them doesn't work for others. The second kind of writer is the one who only knows what he has read. He never makes mistakes because he never actually does anything. These are the type of writers that sound good on the surface, but their actual understanding of how things work is minimal.

I would put Seyfreid, Sherman Bell and Wright in the first class. They actually understand what they are doing and why they are doing it. You cannot come away from reading their writings or speaking to them in person and come to any other conclusion than they know what they are talking about. You don't need to agree with every point, in fact if you do it is from your lack of knowledge and experience, not theirs.

I would also put most of the rest of the popular writers and a couple of the older ones in the other camp. A person can know everything in the world about one or two or three types of firearms and know next to nothing about Double Rifles.

This is why 'good' books and articles on Double rifles are so rare even though many books are written. It is why, as Mac wrote, so many people don't even understand something as basic as regulation and keep repeating stuff someone else told them with out understanding what they heard.

I think that you need to take in what you can, verify it if you want but never say never or always. Particularly about Double Rifles.