Don, once again we agree on something. It must be freezing downstairs...
There has not been a truer statement made where it concerns accuracy claims. The truth is that most people I have met, and I mean no disrespect to anyone when I say this, are not capable of accurately shooting a rifle. I'm sorry, they're just not. There are exceptions , but that is why we have ransom rests. And 5-shot groups are not going to tell you much either. I can't remember where I read this, but I read a pretty detailed and lengthy treatise on determining accuracy several years back. Basically, you have to shoot thousands of rounds at the same point of aim and look at the statistics to determine actual accuracy. While a small 5-shot group might be enough to tell you YOUR potential accuracy with a given rifle and load combo, it's hardly enough to give you good statistical information for determining the accuracy of a given load.
Thank you! I'll have to give it a read. As for filling the HP with PC, that actually sounds like it might have help open things up if anything. But what do I know....
I think the big difference is where lube becomes a fluid under pressure, effectively help slide the bullet through the bore, the PC instead bonds with the lead so firmly that it creates a barrier between the two that does not easily give up the ghost.
Back when I worked in manufacturing, I spent a lot of time working in a Powdercoating line. One day management wanted to test how well the PC would bond to aluminum. With steel, the PC could be chipped off if hit right. When we powdercoated aluminum it bonded so well that you couldn't scrape it off with a sharp chisel. You'd literally lift up aluminum before you separated the PC from the metal. My theory is it is something like this with lead. It bonds so well that you'll destroy the bullet before it comes off. Thus creating a silky smooth layer between the barrel and the lead. Just my theory based on my past experiences in manufacturing and observations while shooting. But it's what I'm going with....