Extreme pellet testing

Now that’s freaky… 😳
How did u figure that out? 😂

Hi Kiwi,
It’s a rainy day here and after reading your post I thought I’d measure a pellets too, for my own curiosity.
I have two tins of JSB exact .177 8.44gr. One is supposedly 4.51mm (I won’t call it head size because we know no part of the pellets conform to those measurements 😂) and the other tin is 4.52mm
I randomly selected 10 from each half used tin and measured head and skirt diameter, as best as I could.
What ever inaccuracies there may be with my measuring should at least be consistent over all 20 pellets 😂.
My take always are as folows: the 4.52mm has a slightly bigger skirt, as you would expect, but seems to have a slightly smaller head… go figure? 😂😂😂

Then just for some extra frustration I measured 10 JSB express 7.87gr, which are also supposed to be 4.52mm.
Yes the weight is different, but you’d expect the measurements to be the same… Humm 🤔

And lastly some gamo 10X. I have always noticed the Gamos are tighter going into the breech, the head size shows why.

I then worked out the average of each, the max and min sizes and the extream spread for each column.

Rainy days….

Edited by KiwiTR6 - 23 Sep 2023 at 8:05am

KiwiTR6 wrote: Wow that's an impressive setup.  I guess it would be invaluable if you were competing at a serious  level. For me, I have some QYS pellets on order.  It'll be interesting to see how they perform in the $100 challenge gun!