Before going forward, please keep the following in mind. Consistent 1 MOA (1/2" five-shot groups at 50) is "good" for a .22 rimfire. Consistent .5 MOA standard (1/4" five-shot groups at 50) is an excellent standard. There are about 150 examples of a good standard on the 1/2" challenge thread and three examples of an excellent standard.
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If you discount the vast majority of .22s sold, the ones that overwhelmingly make up what "most" shooters use, then yes, 1/2" at 50 yards is the maximum to be a "good" standard of accuracy. Much like 1 MOA is the general standard for "good" accuracy from even a budget modern bolt rifle and .5 MOA is "good" for a target or precision rifle. That doesn't mean "most" shooters think .5 MOA is the maximum to be considered "good" accuracy.
If I discount the vast majority of .22 rimfire rifles from an accuracy discussion, it's because they are not especially accurate and don't deserve inclusion in such a conversation.
You say that 1 MOA is the general standard for "good" accuracy from even a
budget bolt action rifle. This is far too optimistic and is unfounded in experience. Inexpensive, budget .22 rimfire rifles simply aren't capable of a consistent 1 MOA (1/2" five shot groups) level of accuracy at 50 yards. Inexpensive .22 rimfire rifles will occasionally, even with inconsistent ammo, shoot a random small group or two, but they won't do it reliably. When budget rifles shoot reliably to a 2 MOA standard, which is 1" five-shot groups at 50 yards, the owner should be pleased. If a consistent 1 MOA standard was the regular standard for most budget .22 rifles, there'd be many more of them on the 1/2" challenge.
To illustrate, CZ rifles start at over $600 and don't fall into the "budget" rifle category. There are only a couple of 457 models, those with the "match" chamber and are well over $800, for which the manufacture promises 1 MOA results -- with the provision "depending on the ammunition used." No other CZ bolt action rimfire rifles have that promise from CZ. The acceptable accuracy for those CZ rifles appears to be 2 MOA (which is 1" groups at 50) -- as many CZ shooters on RFC report CZ USA telling them. Of course, some individual CZ rifles without the match chamber are very good shooters, which means they are above average CZ rifles. I can confirm the fact that they're not all the same through my own experience with at least eight CZ bolt action rifles.
I mean, there's a pretty obvious reason why the challenge here is 1/2 at 50 yds. That's because it's exactly one half of the commonly accepted standard for a good .22. If it wasn't, it wouldn't be much of a challenge, would it? What's the point of having a challenge that merely requires "good" accuracy? It's no accident the centerfire hunting one is 1/2" at 100, because that's.... wait for it.... half the size of what's commonly considered "good" from a rifle.
The average .22 rimfire bolt rifles are just that -- average. This means they generally shoot to 2 MOA at 50 yards, which is 1" at 50 (see the CZ comments above). These rifles usually aren't capable of 1 MOA accuracy (which is 1/2" at 50). As a result, the 1/2" challenge is a very fair way to identify what's good from what's average.
I'll say I truly find it surprising you've literally never shot a 10/22 - for someone so apparently into .22s, that would put you in an incredibly small minority. It's remarkable.
I understood the 10/22 is without a remarkable reputation for accuracy and as a result I never thought to try one. Your view must be that they are in fact great shooters and hence your surprise. Perhaps I've been wrong about them. I have had more than a few other makes of rifles, however, two of them American-made, one of which was capable of a good standard of shooting.
Ok, so you don't have a ton of experience with it. Fine. I've shot two CASES of it this year. Like since January this year, not the past calendar year. I have another three on the shelf and one on the way. It's not the .22 ammo I shoot the most of.
No, I don't have your experience with S&B Standard. I've never found that inexpensive and inconsistent ammo gets better if you shoot more of it.
I didn't ask if you've used it, or whether you were interested in it. My question was what you consider "bulk" - if being sold in 50 round boxes precludes ammo from being "bulk", then what is Fed Champion which is packaged many different ways? It's a very simple question that doesn't require you to have ever seen the ammo, much less shot it or have an opinion on it.
My mistake. I thought you were aware of what bulk ammo is. As a previous poster notes, it's sold in bulk packaging, in quanity, such as a bucket of bullets or a package of 325 or 500 rounds in a box. They are designed for economy, and as such don't have a reputation for consistency. And to be clear, when someone buys a case of match ammo, which is 5000 rounds, he's not buying bulk ammo. A case has ten bricks, each of which in turn have ten boxes of 50 rounds.