Others 30 shot groups @ 50y

[PasadenaMike]

These days, it’s all become routine—pick a rock face, shoot at a random blemish, then confirm your aim with a clean lizard headshot. The finesse is gone, but the final thrill lingers.

 

[FL22]

S510 .22
Athlon 6-24X50
Bench
JTS 22.07
Winds 7-10
5 shots 1.77 MOA
30 shots 3.07 MOA

 

[Roamin Greco 1]

I've read about this in Field and Stream magazine among other places. The idea is that sometimes one can shoot a small group of 5 shots but the the next 5 shot group may have a flyer that opens up the group. However, if one is looking for the gun's most predictable and likely point of impact, the larger groups show where that is, including all the so-called flyers. This let's you dial in the true statistically predictive point of impact. 30 shot groups get you most of the way there according to those articles. The other interesting things is to measure groups as the average distance from the center of the 30 shot group, rather than just the circumference of the outside spread.

 

[FL22]

I've read about this in Field and Stream magazine among other places. The idea is that sometimes one can shoot a small group of 5 shots but the the next 5 shot group may have a flyer that opens up the group. However, if one is looking for the gun's most predictable and likely point of impact, the larger groups show where that is, including all the so-called flyers. This lets you dial in the true statistically predictive point of impact. 30 shot groups get you most of the way there according to those articles. The other interesting things is to measure groups as the average distance from the center of the 30 shot group, rather than just the circumference of the outside spread.

I have found it to be a valuable tool in determining actual accuracy of a pellet that I may have perceived to be good initially.

A perfect case in point the JTS 22.07 at 25 yards gave me an excellent 5 shot 1.06 MOA I believe.

However, the 30 shot group revealed that this is still not the best choice for my S510. Top honors still goes to the JSB Monster Lights.

On a personal note performing this type of test can be a bit tough on the ego, I can’t tell you how many times I have such a perfect 5 to 7 shot group and then simply watch it become annihilated.

If you haven’t done this type of shot test yet, there is a point where it just becomes ugly and then you fight the urge to go ball up the target and throw it in the trash, but one must persevere till it’s conclusion.

Do this several times with different pellets and focus on the data you get.

I have decided that I am going to eventually polish the S510’s barrel and having done this type of testing before hand, I will have at least in my mind, solid data to compare before and after results.

 

[BenjeneerJohn]

@FL22 It can be a hit to the ego but a good reality check as well. It is good to know how your system will perform over 30 rounds. It is also good training for the shooter.

Most importantly, it can help you fine tune your projectile of choice.

John

 

[FL22]

After making some repairs and polishing the barrel, I am very pleased to say that there has been improvement.

50y 1.71 MOA my best 30 shot group to date.

I started off with a 25y 5 shot and it was .466 MOA

 

[Jaabaa]

I printed off about 50 of those targets. I'll put the Aircuda' through every range marker they have some time this week as far as I can go. That's actually fun. Like sighting in a scope. I just like doing it.
Good thread.