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Range Report Received my new Magneto Speed V2 yesterday

Have any of you guys used this chrono while doing a OCW load workup? Most my chrono use is during load development, so I can see what my velocity is doing at the nodes as well. It seems like this would change the barrel harmonics and make finding the correct node more difficult...
 
I started to run an OCW test with it, but I got scared and took it off. I am too lazy to load all those different charges again. After I settled on a load, I stuck it on and shot some groups. It did not change my POI and the two groups I shot were .25" and .33". I may try it with the sucker on the next time.
 
So here's a thought for a cheap test for you all.

1. Weigh the magnetospeed, and tape a similarly weighted object to the barrel and see if your POI shift is similar (testing harmonics only).
2. Quickly carve a piece of wood in a similar shape as the magnetospeed and tape it to your barrel. See if your POI shift is similar or the same (harmonics and muzzle blast).