Re: MagnetoSpeed Chronograph Review
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dallas320i</div><div class="ubbcode-body">Mouse,
... but I was asked HOW these data can be helpful, even if just polishing your skills</div></div>
How it can be helpful? Like I said - by allowing to combine activities such as load development and (some) target practice with the actual chronographing of the rounds being fired.
The alternative is to dedicate some number of rounds specifically for velocity measurement, resigning to the fact that those shots won't be useful for anything else. And then the laws of statistics raise their ugly heads, and say that if you allocate too few rounds for that measurement, the resulting numbers won't be mathematically trustworthy. (<span style="font-style: italic">If somebody pops up and says "But I've been always chrono'ing only 3 rounds, and got my speeds perfect, and shot a rabbit at 1000 yards with it!" - my answer would be "Fine, good for you. But I can't rely on luck.</span>
) That means - to <span style="text-decoration: underline">really</span> get a handle on your velocity bounds, you'd have to shoot at least 25 rounds across the chrono. The more the better.
One advantage of this MagmetoSpeed is the convenience of carrying and attaching it, another one - you don't have to get in front of the firing line to adjust it. So if it affects the accuracy in a <span style="text-decoration: underline">predictable</span> way - and it appears so based on the experience posted by others here - one can do target practice while adding data samples to the velocity measurements. (<span style="font-style: italic">Sure, with MagnetoSpeed the POI will move. OK, fine. As long as I know that, and it's consistent - I'd just account for that shift.</span>)
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dallas320i</div><div class="ubbcode-body">And because of this chrono with barrel contact sure it will not add accuracy, but can reduce this because of direct barrel contact and some movement (you will not see but it is), harmonics etc. So you may not undestand correctly actual out-of-group-holes reasons. But again, this is important with extreme accuracy shooting, many shooters do not need this.</div></div>
I would not try to make a 1200m hit with this thing strapped to my barrel
. On the other hand, I see no problem shooting all the targets between 100 and 300m with MagnetoSpeed on - because it looks like (again, from the others' experience) that it doesn't impact the group size much, just shifts the POI somewhat.
Correlating vertical stringing with velocity differences of those rounds might be useful too, but that's for later.
