Well, I fired one of them, it had a tremendous blast, I have preferred not to use them, for the reason too, that they have Berdan primers.[/size]In stead I have used a load of 4 grs of VihtaVuori N310, behind a Lee 93 grs bullet (lead/tin, sized to .311), enough to reload, and give a velosity of 370 m/s.I have tried to use a slower powder (4,8 grs N340), it reloads, but the cases are blackened on the outside, (you get gases slipping past the case).[/color]