Reply To: Why is it that round lead ball ammo generally performs poorly in AGs?

Forums Pellets, Projectiles, Slugs, & Ammo Why is it that round lead ball ammo generally performs poorly in AGs? Reply To: Why is it that round lead ball ammo generally performs poorly in AGs?

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greg
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Circling back to report on a quick experiment I did with 15.4 gr .22 Gamo Round ball ammo in my FX Indy.In short – no (pleasant) surprises.The ammo itself was unbelievably dirty and greasy, so I washed it thoroughly before testing.

1. The shape of the RBs was very rough. There were large pits and crevices on most of them.
2. Diameters were very inconsistent, the same ball could read as much as .3 mm off depending on where the calipers were positioned
3. Weights were quite inconsistent as well, as much as .6 grain difference in a random sample of about 40 pellets weighed.
4. No wonder that all of the above resulted in ridiculous chrony results. On power setting 2 (~650 FPS, 16 FPE) I was getting extreme spread of 60 FPS over 6 shots! I was shooting in a known plateau  pressure range, which for JSBs 15.9s, for example, produce reliable strings under 10FPS extreme spread.

Obviously, no point in trying to shoot this for accuracy even at short range 🙂 

(edit: formatting)