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PostPosted: Wed Feb 08, 2017 9:34 am 

Joined: Mon Aug 08, 2016 7:23 am
Posts: 2820
Location: Somewheres near the Atlantic
987654321 wrote:
A quick update: I used two different chrono apps on my phone this morning, taking my time to measure distances more accurately. Consistently telling me I'm between 540-560 fps. At impact, closer to 500fps, which apparently is still enough to fragment the pellet. It's no mechanical chronograph, but there's definitely no way my little Stoeger X3 is pushing 600+ fps.

Well get a chrony and not a APP.

PostPosted: Wed Feb 08, 2017 1:39 pm 

Joined: Wed Jan 05, 2011 12:35 pm
Posts: 6074
Location: P.G. B.C.
Different pellets and different bullets will give different results at any designated speed., let alone mixing up the speeds of impact along with what is hit and you add another set of variables.

On top of that, pellets have varying amounts of antimony or tin in them as well thus every single change from the designated norm, alters the results.

The answer is "NO" - you cannot reliably and accurately GUESS at the velocity just from the pellet damage.

If knowing the velocity is important to you, you need to obtain a machine that will tell you what you want or need to know.

Best Wishes

PostPosted: Wed Feb 08, 2017 3:04 pm 

Joined: Mon Feb 06, 2017 8:13 am
Posts: 156
I'll order a proper chrony.

In the meantime, I took a little spring tension out and ran the app again. It may not be accurate, but at least it's consistent!
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