Keep On Dreaming, Bill.
Friend Dave:
What's that leave?"
Answer: A dreamer like me.
Your friend, Bill Calfee
I'm glad that you dream about these things, Bill. Many of the discoveries you have shared with us have helped improve performance even in the prone game.
As others have stated, it appears that ammo is the reason that prone scores have failed to reflect the improvements in other areas, at least on a proportional basis.
There is no single reason evident to me that explains why ammo is not as "good" today. I'm always tempted to blame busy-bodies who demand a perfect world and force changes in chemical compounds like those used in primers. But the random appearance of a really good lot of ammo today says that those kinds of hurdles can be successfully overcome.
So again, I do not have an informed opinion on why ammo is good one day and not the next. However, I do think that you and others have found a way to deal with some of the ammo anomalies - tuners.
If tuners were available that were easy to install and adjust and did not interfere with the use of iron sights, I believe they would be more widely used and contribute to better scores.
Some years ago I bought an Anschutz 1813. To test it, I got into the prone position as I would for a match except that I put a sandbag under my left hand which supported the forearm. I tried several different lots of ammo and none shot very well.
The next Sunday, I used the rifle in the little 80-shot weekly match at Los Angeles Rifle and Revolver Club where it shot much better in the unsupported position, i.e. without the sandbag. Those results were repeatable.
Over the years I've noticed that when a rimfire bullet does not go where it should, based on the shot call, that it is usually accompanied by what I can only describe as a tiny "hiccup" in the rifle. Now many will say, "duh", "you flinched, muscled, shouldered, or otherwise moved the rifle". Not so. I've shot enough to know 99.5% of the time when I screw up. This especially true when using a scope. One can not only see where the crosshairs were when the shot broke, but the complete follow through, and, when the light's right, see the bullet's path to the point of impact.
All of that tells me that there are shots where the rifle recoils differently. I think the benefit of a tuner is that it helps counter or oppose the impulse of the rifle to move in way that is different from the "tuned" harmonic balance. That is to say the combination of ammo, barrel, stock, bedding, support of the rifle, and a dozen other things that make up the system that resonates on a particular note each time a shot is fired.
I'm sure much of this has been discussed in the lengthy threads about tuners, but I'm just relaying what I've observed in my own experience.
I do not want to suggest that good scores can only be fired with a tuner. There are many good scores shot without them. I do not have them on my smallbore rifles. However, I do have a Turbo action, a Lilja barrel, a couple of stocks to pick from, and a sketch of a tuner - all sitting out in the shop. I'm hoping some elves will sneak into the shop and put them all together. I would but I'm retired and distracted by many other things, not to mention being afflicted with acute laziness.
So keep on dreaming, Bill. Maybe you'll come up with a heavier firing pin or stronger spring or something else that will make tuners obsolete or otherwise improve performance.
FWIW