Nomercy I for one value your input on this. I'm not a bad shot by any stretch of the imagination (way back in the 80s when I shot competition I was in the top 15% in the NRA nationals. I'm pretty proud of that. And because I had no rating at the time I had to shoot along side those in the Master class and took 3rd place in my first metallic silhouette shoot.)
But this thread just proves that some old timers like me are willing to try anything to improve their shooting ability. But it also shows that others like to dig their heels in the sand and not budge when it comes to changing their way of load development.
I for one would always shoot a range of charges at 100 yards, usually 10 rounds, enough for two 5 shot groups, look for the smallest group and that would be my load. Great for 99.9% of my hunting. But now that I've decided to get into long range shooting (not hunting) for fun I've found there is so much more required for developing loads for those extreme ranges.
I'm very likely to run these test using my more accurate hunting rifles. Who know, I may just find out I got lucky with my initial choice or need to do some changing.
If I need any more info on this subject I'll drop you a PM. Thanks again.