I finished reading "Custom Gunmakers of the 20th Century". WOW. While I have not internalized the information, it was so interesting to read the details and imagine the work Mr. Petrov went through gathering this material and putting his information to paper! I'm hoping to have more insight as I (from time to time) look at rifles online and in shops and shows. I look forward to visiting my Dad next year and taking a closer look at the rifle.