My intention is the same as yours no argument
Your analogy is absolutely the reason that it is called a challenge.To purchase a gun and go to the range shoot 100 200 or a brick or 2 bricks roll up your sleeves and shoot five five shot groups and then decide equipment flaws poor chambers tooling marks crowns,bedding triggers not the shooter must be the equipment shouldn't buy another gun without a personal inspection with a bore scope is really a stretch. A brick of ammo doesn't prove anything with the average sporter.30+ years of shooting will throw a wet blanket on that.The getting in the zone knowing the gun your capabilities and many other variables is just the tip of the iceberg.Those groups are not that easy.To say it will shoot that all day is only a statement.I don't own anything that will shoot it all day,but I have a couple of shooters that have shot 5 5 shot groups.
There have been successful challenges done off sand bags on the hood of a truck.Without match ammo,those shooters have discipline and shooting skills without spending a weeks wages on chasing the rabbit,and the target proves that.
This a cut and paste from another gun group the fellow makes a lot of sense he used a CZ as an example. Lots of stats.
To understand shooter reports and reviews on CZ rifle accuracy you have to understand normal distribution and the concept of standard deviation in three different ways.
First
CZ .22 LRs in general tend to be very accurate by .22 LR Sporter standards and they tend to be quite consistent.
That means that if you take 100 CZ 455 Varmint rifles at random off the production line and shoot them with the same lot of ammo, and collect data on the average group sizes, you'll get a representative distribution of the accuracy of CZ 455 Varmint rifles.
68 of them will have group sizes within +/- 1 standard deviation of the average, 13 of them will fall on the "good" side of that central distribution with groups sizes between 1 and 2 SD better than the mean, while 13 of them will be on the "bad" side of that central distribution with group sizes between1 and SD worse than averages. Finally, you'll have 3 of them on the "great" side of accuracy with group sizes between 2 and 3 SD better than the average, and 3 of them on the "awful" side of average with group sizes between 2 and 3 SD worse than average.
You'll also probably find that compared to, for example, 100 Savage rifles, the distribution in accuracy is narrower with all the rifles shooting groups closer to the average group size, and you'll probably find that average group size is smaller.
Second
Similarly, if you take one CZ 455 and shoot 100 five shot groups at 100 yards, you'll also find a normal distribution in group size. Let's say that the average group size is 1.0" and the SD is .25" That means:
3 groups will fall between .25" and .50"
13 groups will fall between .50" and .75"
68 groups will fall between .75" and 1.25";
13 groups will fall between 1.25" and 1.50"
3 groups will fall between 1.50" and 1.75"
Third
If you insist on a rifle demonstrating a level of accuracy at the 99% confidence level, then the above CZ 455 that shot the 100 groups is only a 1.75 MOA rifle.
If you are ok with the rifle demonstrating accuracy at the 95% confidence level then it's a 1.5 MOA rifle.
If you're ok with the rifle demonstrating accuracy at the 68% confidence level than it's a 1.25 MOA rifle.
If you're ok with the average accuracy then it's a 1 MOA rifle.
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All three are good things to understand as:
1. Sooner or later you'll find someone who shoots one or maybe even two of those .25 to .50" groups at 100 yards and claim their CZ 755 is a 1/2 MOA or even 1/4 MOA rifle. You need to understand why it probably isn't, even if he doesn't.
2. Even though CZ's tend to be pretty consistent, they are not all the same. The odds of getting a "good" versus "bad" CZ 455 follows the same laws of probability and in broad brush strokes, 68 out of 100 will shoot "average", 16 will shoot better than average and 16 will shoot worse than average.
3. CZ's on average are a) a lot more accurate than most sporters and b) the difference between a good and a bad CZ are a lot less than with most other rifles, and combined with a good average overall it means a bad CZ is still likely to shoot better than an average or above average .22 LR Sporter made by most other companies.
