Something everybody needs to understand is that "Eley primed" is not a magic guarantee of quality ammo. Eley owns and licenses a patent for a process. The execution of the process is up to the licensee. They can do it well or they can do it sloppily. And it's only one out of many, many process parameters that have to be controlled (or not) when making .22 ammo. Even if they do the priming right, if other factors aren't equally well controlled, "Eley primed" is just a marketing gimmick.
@Chill - I don't recall that Aguila even had match ammo circa 1998, so no, it probably wasn't. Last 5 years or so I've been too crippled-up with a bad back to shoot my good rifles seriously, so I'm not able to judge by testing current offerings, even off the bench.
But both Skeettx and Maven said they got better performance by weight-sorting whatever it was that they were using. I take it that they are referring to whatever Aguila calls "match" ammo today. I'm a superannuated process control gaging guy (worked 15 years for Zeiss IMT). So I'm extrapolating from first principles here. If one very obvious characteristic (overall weight) isn't being closely controlled, how can any of the rest can be trusted?
Try weight-sorting some Eley Tenex sometime. You can't. It all weighs exactly the same on any scale or balance we shooters can afford. THAT is good process control!
About six or seven years ago I wrapped myself up for months, weighing and measuring and testing and modifying .22 ammo. Mostly bulk stuff, because the objective was to find out what could be done to improve the accuracy of an abysmal 10/22 Ruger without breaking the bank. A sidebar revelation that came out of it was that "match" ammo from the mfgrs. I evaluated wasn't much different from their bulk ammo except for the label on the box. (Leaving aside Thunderbolt, which was so horrible that it didn't deserve to even be called bulk ammo. Anything looked like match ammo compared to that stuff!)
The only real match ammo that mfgrs. other than Eley have offered in recent decades was the Federal UM-1 stuff with the dimple in the base. I picked up several boxes of it at an estate auction in the late '90s, and not knowing that it was no longer being made, shot up all but half of one box just practicing. Made me look like Harry Pope on his best days, but when it came time to do my study, I didn't have a sample size big enough to get meaningful weight data. From that tiny sample, it should have been on par with Eley Match at least.
Point being that, unless we can afford Eley prices, we don't know what really good match ammo is, because we aren't getting it from anybody else. Unless things have improved a lot since 2014.
See yer 3 cents and raise ya a nickel!
BTW - What became of Champion? My old bookmark gets me "can't find that server", and I can't find them with a general search. I used to visit their store pretty often when traveling back and forth from Michigan to my Ohio retirement BOL. Nice folks. Gone now, I guess.