Oh wow, that sounds like their crowning process is worse now than ever. A few years ago at least there was a decent chance the rifling would be undisturbed.
Which is a tacit admission from both Umarex and Diana that they don’t care enough about quality to fix this very basic workmanship issue that has been around for over 5 years. What a shame.
BUT
The pellets come off the lands evenly, allowing accuracy.
Im cutting one down in a few minutes, I'll take pix.
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