yup .. did some tests the other day ... I rolled paintballs around the edge of a large magnifine glass convex surface and the rim to see if they track around and don't wobble or roll back into a dimple.. its a quick? way of finding out of shape balls to set aside and test fire ... result those out of shape balls were tighter in the barrel and they didnt burst and went dead straight in a tighter group then my good paint did ... damm things were almost bullet shaped!!....
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