Meanwhile the LR precision guys swear by low SDs and ES and you don't normally get there with thrown charges.
There's a very big difference between benchrest and precision rifle games, so naturally, there's a very big difference between how they're loaded. Not all guys load the same, of course, but the fact a guy really needs to shoot sub 1/4moa in 600/1000 (let alone 100/200 games) benchrest is a really big shift from what has to happen in precision rifle matches. A 3/4MOA rifle can win most precision rifle matches, whereas it wouldn't even smell the top ranks of most Benchrest matches. Precision rifle guys might procrastinate enough to load the night before a match, but nobody is loading at the match like what is done for BR matches. Knowing where your rifle prints at one or two ranges is fine in benchrest, and the rifle doesn't have to ever be asked to do anything else. Don't get me wrong, I've found it MUCH easier to load for PR matches than I ever did for BR, but only because the expectation/demand is so much lower. It's really easy to find a 1/2-3/4 MOA load in these rifles which has single digit SD's, maybe even single digit ES's, and roll on. Finding a load which shot in the 1's has never been something I could say was easy.
@D.B. Cooper - Lots of guys will jump on the "you're doing it wrong" bandwagon any time anyone has a complaint about the Hornady AutoCharge failing, and the trickle approach tuning IS a very common user error, but unfortunately, what you're experiencing is VERY common for the Hornady unit. Doesn't matter what powder, doesn't matter what product. It's an electronics issue. I went through three of the Hornady units, none lasted more than 18mos. My first one died out of the 1yr warranty, but I thought it a fluke and bought another. That one went down during the warranty, and Hornady sent me a third. That one also went down within 18mos. I used it for some low volume stuff for about a year after that, maybe threw another 1,000rnds in batches of no more than 100 at a time, then the digital drive completely gave up. Not just the failure of the controller, but the drive completely quit. The scale circuit still worked, but none of the dispense functions worked at all - within 2.5yrs, two independent electronics failures within one unit, and 3 controller failures within 3 units with less than 18months of service life. When I joined the Kansas Precision Rifle Club, I met 3 other guys who had experienced the same issues with their Hornady's. I LOVE hornady products, shoot thousands of their bullets each year, load with their equipment, but their Autocharge powder dispenser is NOT worthy of the rest of their product lines. Alternatively, one of my Chargemasters has over a decade on it without a hiccup... I'm about a year into a Lyman Gen 5 which I bought used, 3yrs old, and it has been flawless as well...
It's just not worth taking a risk on the Hornady unit.