I recently purchased your great book and am slowly working my way through it. I find myself concentrating as much as I used to in college, a looong time ago.
I started out in the book but jumping here and there getting the highlights, but am now giving it a serious read to ground myself in the principles before jumping into reloading black powder.
I would like to say that I've been interested in shooting for over 50 years and have in that time come across a lot of "experts" who often misled me when I was younger, and as the years progressed I learned to tune out the bs artists. Your book is like a breath of fresh air. There can actually be intelligent, articulate, and insightful people in this sport. I have have really valued the quotes at the start of each chapter. Those, and the quality and clarity of writing have already got me thinking of Spencer with regret as one of those persons who got away before I had a chance to meet him. Your book at this time in my life has been a real find. Thank you. Best Wishes, Dave Parks