Load, rather forgiving. 3.9 worked real well, but my 9mm carbine needed a bit more, and only wanted to have 1x 9mm load so up'd to 4.2 of vit n320 and all was good. 124gn rusa projectiles, fed and fiocchi primers(prefer feds) and a real basket case of brass, through a 650 with carbide dies.
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