.....So what was I expecting out of a semi-auto 7.62x39 $2k "DMR" rifle? I expected it to out perform all of the previous 7.62x39 rifles I've owned, or at least be equal to my AR 7.62 upper. Seems reasonable, no?
Well, as I said above, "reasonable expectations" really
depend on how you value accuracy as opposed to reliability, durability, ergonomics, and so forth. You seem to value accuracy above aĺl of those other attributes because it is the only readily measurable quality. To do so however, is to
potentially sell those other considerations short when assigning their relative importance to the overall mix. Because at the end of the day, practical accuracy (the ability to ring steel versus tight groupis) is at least partially dependant on those ergonomics, the ease of mounting an optic with correct eye relief, etc.
Just as you are not trying to convince anyone not to like the M10X, I am not trying to convince anyone that grouping accuracy is not important. I am merely suggesting that it is not the only quality in a rifle, and depending on how you assign importance within that magical mix of qualities, it
may not be the most important. Heresay? Well, you can't hit your target if your rifle won't fire in the first place, or if you can't obtain a comfortable sight picture, or, or, or.....
I am simply saying that grouping accuracy isn't everything. Based on the competing importance of other attributes, your expectation that "money spent ought to equal increased accuracy" might not be very reasonable after all, especially considering the limitations of the cartridge itself.
As always, YMWV...