I watched to 25 minutes or so. I'll put my diplomatic hat on, on the basis that..... anyway..... I've never heard so much absolute bull-shi......, er...., bullshine in my life about bolt and bolt head fitting and dynamic v static this that and the other. Given that the high and low CHS is within .010 (.064 and .074) the CHS WILL be correct if it gauges in at .072, because it will STILL reject the ,074" gauge. I saw no use or mention of the actual gauges. As for re-fitting the fore-end. Let's leave it at that. I didn't look at the last 15 mts as I had to watch my new lawn grow but did anyone see the stock bolt or inside the barrel being lavished with grease XG279 or the equivalent? Or the gap around the butt to socket being adjusted?
Yet another enthusiastic amateur.......... I wonder if he can re-seed threadbare garden lawns.