I wrote a long-form article about an experiment that I conducted this summer to explore the question of whether or not recoil-management techniques have an effect on muzzle velocity. It involved a bit of data science (Python, pandas, plotly), some hardware (arduino, 3d printing), and math (LaTeX). I hope that this content is high quality enough to justify the time you spend reading it, and how much time it took me to create it!
I’d love to hear your feedback and answer any questions!
A great post and analysis.
Answering your question requires more data. Are those two out of ten really random outliers or a consequence of a difference in procedure. You did not cite other sources and I know nothing about guns.
| Answering your question requires more data. Are those two out of ten really random outliers or a consequence of a difference in procedure. You did not cite other sources and I know nothing about guns.
The outliers may not be random. I mentioned a few times in the article that I should probably have done a better job with bullet-sorting (by bearing length and weight), which would be the procedural consequence. It was unexpected, so I will cover this specific topic (how bullet sorting affects velocity and chamber pressure) in another article. I wanted to stay on-track for the purposes of this article. That said, 2 slower rounds out of 25 is better than most precision marksmen/reloaders see, but still shows room for improvement.
I don’t know if there is a single source I can cite for what reloaders & marksmen typically experience in terms of velocity variation, but one of my goals is to produce software where they can upload data from their chronographs (which measure this), provide some more details (bullet type, sku, etc), so that community-wide statistics can be produced.
I hope this helps to address your concerns – thank you for the feedback!
I love this. Actual data with test rig and code instead of the usual hearsay, seat-of-the-pants, and handed down “just so” wisdom around shooting. I’m also envious of that rifle :)
Thank you! I think you nailed my motivation for doing this exactly. Further, I want to provide the tools and methods for others to try the experiment themselves!