Gotcha, so the 18gr need more speed, or twist. I have some 20gr and 23gr coming tomorrow. Definitely won't be going fast enough but hopefully they remain stable.Uragan 2 has a better Block assembly than the U1 .. if I shot from a solid bench not a problem at all .. but from a soft place or a tripod its harmonics suck . Now in all 3 is like shooting a HP taipan.. I tested today the boat tail again.. it works good with the 16gr BT but fall apart with the 18gr BT ..
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