Maybe it's a blend.Here's a pic of some Shooters World Precision / Lovex SO62-02. Note the different size in powder kernels. It's the only extruded powder I've ever had real trouble with in an V2 autothrow. The long kernels will bind it up worse than IMR 4064, yet the small kerenels will leak out the side. Same behavior (but not as severe) in a manual RCBS uniflow.
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On the full 300m target, yes. This was on the NRA C-3 which is 300m reduced to 300 yards.Isn't the 10 ring 3.9"? Rule book says 10cm => ~ 3.94", yes?