The book is very thorough, but technical. I see it as a book for a hobbyist and technician, not for a survivalist. On some projects he says you must have a lathe, for instance. I have never seen its equal in theory. He gives data and formulae for every kind of rubber band, wood bow and air powered weapon you can think of, but not having read your blog, he does not give them for valve springs. If he did it would be the best I am sure.
I want to say this is an excellent book, and could really help someone design and make primitive weapons, if they were skilled and had the equipment. This author has tested some air guns, for example, with a chronograph. But you would have to be very good with tools I think to make these projects. For preparing in advance this would be a good guide, but it is way above my level. Glad to have it, but don’t see myself actually following the plans.
I would add there is much from this book which could help people with their own designs. It contains information on the principles of engineering involved and has good historical knowledge, too. It is a rich book, but too advanced for some of us. It is a book of principles, with excellent illustrations.
The author is very thorough and detailed. He has been making bows and other weapons, including air guns for years. He said walls and furniture of his house are dented from accidents. He also measures velocities with a chronometer. He even mentions using springs in a slingshot but has not done it. He stresses gains from using heavier projectiles, not in velocity, but in force and why it is so.
What I would like to see is someone using his principles in a practical design. He loves theory. He has so many “on the other hand” statements he sounds like an economist. But solid science is here if a person is willing to dig for it.
– Name withheld upon request
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