I have not listened to that podcast yet but will agree with the general rule of 30 samples, like Jordan posted above. It is a good starting point for various studies. In fact it is somewhat of a default sample size for certain analysis software and fields. More is better, but for some industries it becomes too cost or time prohibitive to do more.
I tend to use 40. Simply due to the fact that two boxes of 20 rounds equals 40, regarding ES for example. And more samples doesn't hurt.
The main thing I took away besides the 20-30 round group sample size is how little other things mattered to getting a sub MOA rifle. They loaded .025-.030 off the lands, and made powder changes in 1 grain increments. If they couldn't find accuracy within a few powder types, they would change the barrel. As well as the cost of chasing your tail if your first sample group wasn't large enough before testing at ranges.
I found that interesting, as well. They test several powders with a bullet of choice, if nothing seems promising switch bullets. If still no love, swap barrels. Also interesting to do initial testing with 10-round groups, and retest the promising combos with 20-round groups before finalizing the load decision.
Yes indeedee, very interesting, thanks. I will now start using composites of seven to ten of the three-shot groups. That way I will have my cake and eat it too. Still get those 3-shot groups to admire, and the 21-30 shot composites to know what is really going on most likely, statistically speaking, of course.
Ron aka "Rip" for Riflecrank Internationale Permanente NRA Life Benefactor and Beneficiary .458 Winchester Magnum, Magnanimous in Victory THE WALKING DEAD does so remind me of Democrap voters. Donkeypox.
I long ago gave up on the notion of chasing the perfect group according to other folks and other rifles. I find hunting accuracy in the rifle with the bullet I want to hunt with and focus on doing my part better, that being breaking the shot from field positions.
I am glad that folks like the ones in the video do this work for us to learn from as we make choices at home but my main criteria for accuracy is a repeatable and reliable rifle for nice round groups over time.
I have several of those today and thus I am happy. Best regards, F01
You can't tell me all the guys on the internet don't have sub half moa rifles! They said so! They posted a 3 shot group to prove it!
Most shooters never shoot enough to learn any better.
I shoot with some guys that one week they shoot well...the next you'd think they had an entirely different rifle and/or load. They don't know how to properly clean their bore...they don't do anything consistent at the reloading bench. They don't know how to tune a load and actually find the right load.
Lots of guys will pick the wrong load every time simply because it printed the tightest group.
