I got to talk extensively with Eley representatives at the National Matches, and at the presentations they gave to advertize their indoor test range. It was all very interesting. Eley has, shall we say, inexpensive lines of 22lr. Then they have the expensive match lines. Eley claimed that the production lines that produced the expensive "Black" box and "Red" box ammunition had more quality control measures. There were limits to a production lot based on machine and component changes. At the end of the match production line everything was tested through their test barrels. Of course the attendees at the presentation wanted to know what barrels, but the Eley representatives did not consider barrel type to be important. Which suggests to me, that good barrels probably shoot the same average group size, maybe with different lots, but that the ammunition is the greatest variable, given a good barrel. What shot best in Eley barrels got a Red label and cost $300 to $500 more per case (what's the price now, $1750 for a case of 5000?). The second best stuff received a Black label.
There are some very old coots around who claim modern 22 LR match is not as accurate as the older stuff. And of all the people to verify this, Lones Wigger was one of them. I talked to him about this. Lones earned an Olympic Gold back in the days when winning Gold was heavily advertised in all sports. Some remember when the Olympics were a proxy war between "good capitalism" and "godless communism". Lones was big, when Giants walked the earth.
Anyway, according to Lones Wigger, the standard for excellence was 152 X's in a 1600 match. It may have been shooting a 1600 with 152X. And you know, today a 1600 is sort of like throwing a no hitter in baseball. According to Lones, you seldom see 152X counts in a 1600 match with today's ammunition. I have not been looking at X counts, but I can say, 1600's are rare. I have one, have the Sweat shirt, very proud of it, want to do it again.
The lady who was shooting this, claimed it was from the 1960's
That red box hiding behind the pre WW2 smallbore prone loading block, is the current Eley Tennex.
Now based on my XTC shooting, unless the commercial centerfire ammunition is Federal Gold Medal Match, it ain't match. Federal Gold Medal match is amazing stuff. Once you flush your bank account buying the stuff, assuming you are a good shot, you will be happy. Maybe I am being too picky, there are other brands which produce good ammunition, but for decades, the commercial standard was Federal Gold Medal match. Good commercial ammunition is going to be tipped with either a Hornady, or Sierra, Match bullet. If it does not have one of these, it probably is not match.
For 99% of the "Match" stuff out there, "Match" is simply an advertising term, similar to "Mil Spec". Basically an amorphous term, meaning what the reader, or buyer, wants it to mean.
If a doughnut vendor stamped "Match" on their doughnut boxes, and brought them out to a Regional/National Match, they would sell a truck load before breakfast. The word "Match" sells all sort of things absolutely guaranteed not to have any positive affect to the score of wannabees.