Two vids Aim Small posted that are an interesting watch, testing pellet accuracy at different fps.
https://youtu.be/M7TN0jcXdSU
https://youtu.be/MCZjYM5Yolo
https://youtu.be/M7TN0jcXdSU
https://youtu.be/MCZjYM5Yolo
Aim Small .22 test videos: accuracy and velocity
- Thread starter SqrlHntr
- Start date
Just saw it,,not bad. Showed how some pellets liked the higher speed ranges and a few Tried and Trusted liked the middle ranges.
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Thank you for posting the vids!! 
For those who don't want to sit through the videos....
Here's an executive summary to answer the question: How fast (and how slow) can I shoot hunting pellets and still have a possibility to get good hunting precision with my gun?
The tester used a .22cal Impact and the six positions of his power wheel, to get different velocities. Very practical.
Range was 33y (30m). That's a very typical hunting range, great choice.
Shot groups were only 5 shots at each velocity. Considering shooter errors (he admits several during the vids) and "statistical luck" this reduces the trustworthiness of the test results — because only one shot group of only five shots allows for a lot of statistical luck to skew the results. But still better than no test results. 
The test tries but CANNOT answer the following question: What is the best velocity for pellet P? ➔ Because every barrel is different.... 
The test CAN answer the following question: How fast (and how slow) can I shoot hunting pellets and still have a possibility to get good hunting precision with my gun?
RESULTS of velocities where pellets grouped well in this particular gun:
▪JSB Hades 814-961fps MV (very small groups)
▪H&N Hornet 832-953fps
▪H&N Terminator 799-948
▪H&N Baracuda Hunter Extreme (72
783-903
▪H&N Baracuda Hunter 726-901 (very small groups)
▪Crow Magnum did not group well in this particular gun
What I find especially positive about the test results is that the lighter pellets did so well even at such high velocities.
➔ Particularly the H&N Terminator which is really a wadcutter with a lip and a tip — going at 950fps!
A comment about the domed pellet test which basically compared H&N to JSB pellets (AA is just a JSB rebranding):
I admit to be biased since I was born in Germany — but did you notice the stunning precision of the H&N pellets (18 and 21gr) when compared to the JSB pellets? His impact shot the H&N pellets extremely well. German precision, I guess....
Matthias
For those who don't want to sit through the videos....
Here's an executive summary to answer the question: How fast (and how slow) can I shoot hunting pellets and still have a possibility to get good hunting precision with my gun?
The tester used a .22cal Impact and the six positions of his power wheel, to get different velocities. Very practical. Range was 33y (30m). That's a very typical hunting range, great choice. Shot groups were only 5 shots at each velocity. Considering shooter errors (he admits several during the vids) and "statistical luck" this reduces the trustworthiness of the test results — because only one shot group of only five shots allows for a lot of statistical luck to skew the results. But still better than no test results. The test tries but CANNOT answer the following question: What is the best velocity for pellet P? ➔ Because every barrel is different.... The test CAN answer the following question: How fast (and how slow) can I shoot hunting pellets and still have a possibility to get good hunting precision with my gun? RESULTS of velocities where pellets grouped well in this particular gun:▪JSB Hades 814-961fps MV (very small groups)
▪H&N Hornet 832-953fps
▪H&N Terminator 799-948
▪H&N Baracuda Hunter Extreme (72
783-903▪H&N Baracuda Hunter 726-901 (very small groups)
▪Crow Magnum did not group well in this particular gun
What I find especially positive about the test results is that the lighter pellets did so well even at such high velocities. ➔ Particularly the H&N Terminator which is really a wadcutter with a lip and a tip — going at 950fps!
A comment about the domed pellet test which basically compared H&N to JSB pellets (AA is just a JSB rebranding):I admit to be biased since I was born in Germany — but did you notice the stunning precision of the H&N pellets (18 and 21gr) when compared to the JSB pellets? His impact shot the H&N pellets extremely well. German precision, I guess....
Matthias
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NIce videos and nice summation above. I have a different view on number of shots needed for validity. You note that "shooter error" could make a difference with 1 shot out of 5. Very true. But I believe that shooter error is likely to be higher with more shots so how does one prove that 10 shots are "better" than 5? Consider a rifle in a solid rest. Shot 5 shots. No "shooter error". Then shoot 5 more shots. I BET the added 5 shots would produce a wider group (certainly an assumption but I bet it would be so). If so, it wouldn't be because of shooter error, but because of "other" factors. Identifying THOSE OTHER FACTORS could certainly be advantageous, but are they "shooter error". I'm not so sure and I'm fine with 5 shots for most of my purposes. YMMV.
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bandg,
you're right, of course.
More shots will increase the size of a group, so groups with more shots will make our test pellet look worse. Not really telling us what we want to know.
➔ This is inherently the problem with the most common shooting performance measurement:
Even if we have a 20-shot group we're really just measuring TWO shots — the two that are farthest apart, say they are 2" apart. Whether we put the other 18 in a ragged dize-sized hole, or whether they are all spread out over all of 2 inches — the extreme spread measurement method does not tell us.
However, if we shot say 3 groups of 5 shots, and took the average, we'd be on much surer ground with our evaluation of the precision of a pellet.
There are of course other shooting performance measurements: The CEP (Circular Error Probable) or the MR (Mean Radius).
These measurements take every shot into account, and average them out. They do get more trustworthy with more shots per group.
Matthias
Here's an article from the Ballistipedia where I learned this:
http://ballistipedia.com/index.php?title=FAQ
Much more accessible are the articles from Cal Zant's PrecisionRifleBlog.com, just excellet: clear and useful.
https://precisionrifleblog.com/2020/12/12/measuring-group-size-statistics-for-shooters/
Phone apps that measure MR (Mean Radius) are:
—Range Buddy
—TargetScan (using on of around 50 official paper targets the app places all hits automatically with one photo)
—Ballistic-X
—and others
you're right, of course.
More shots will increase the size of a group, so groups with more shots will make our test pellet look worse. Not really telling us what we want to know.➔ This is inherently the problem with the most common shooting performance measurement:
Even if we have a 20-shot group we're really just measuring TWO shots — the two that are farthest apart, say they are 2" apart. Whether we put the other 18 in a ragged dize-sized hole, or whether they are all spread out over all of 2 inches — the extreme spread measurement method does not tell us.
However, if we shot say 3 groups of 5 shots, and took the average, we'd be on much surer ground with our evaluation of the precision of a pellet.There are of course other shooting performance measurements: The CEP (Circular Error Probable) or the MR (Mean Radius).These measurements take every shot into account, and average them out. They do get more trustworthy with more shots per group.
Matthias
Here's an article from the Ballistipedia where I learned this:
http://ballistipedia.com/index.php?title=FAQ
Much more accessible are the articles from Cal Zant's PrecisionRifleBlog.com, just excellet: clear and useful.
https://precisionrifleblog.com/2020/12/12/measuring-group-size-statistics-for-shooters/
Phone apps that measure MR (Mean Radius) are:
—Range Buddy
—TargetScan (using on of around 50 official paper targets the app places all hits automatically with one photo)
—Ballistic-X
—and others
Upvote 0
bandg,
you're right, of course.
➔ This is inherently the problem with the most common shooting performance measurement:
Even if we have a 20-shot group we're really just measuring TWO shots — the two that are farthest apart, say they are 2" apart. Whether we put the other 18 in a ragged dize-sized hole, or whether they are all spread out over all of 2 inches — the extreme spread measurement method does not tell us.
These measurements take every shot into account, and average them out. They do get more trustworthy with more shots per group.
Matthias
Here's an article from the Ballistipedia where I learned this:
http://ballistipedia.com/index.php?title=FAQ
Much more accessible are the articles from Cal Zant's PrecisionRifleBlog.com, just excellet: clear and useful.
https://precisionrifleblog.com/2020/12/12/measuring-group-size-statistics-for-shooters/
Phone apps that measure MR (Mean Radius) are:
—Range Buddy
—TargetScan (using on of around 50 official paper targets the app places all hits automatically with one photo)
—Ballistic-X
—and others
Yes, it seems that it very much might depend on USE of the gun to answer this. Shooting for small groups from a bench is one use, hunting situations are another, and plinking randomly in varying conditions still another. For me, 5 is plenty. For others, apparently not. All relative.
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