The loads used at present do hit right on the point of aim at 50m. I think this load using the 190 gr pill probably isn't the load it was originally sighted in for. My feeling is the 150 gr bullet was the load first used, going on when the rifle was made. The front sight does look as though it has seen a bit of the file, I feel lowered, and thats what makes me think it started life using the lighter load. Also the mould used at present with the rifle is a modern CBE product, which throws the 190 gr bullet. There is also another mould with the rifle which doesn't fit in the case, but is made of bronze and is marked H.Holland 360. This makes a grooved , 155 gr bullet.
Because of the Henry rifling, I'm going to give paper patch bullets a go. Got the mould almost finished yesterday. In my Henry 360, bullet weigth and velocity don't seem to make much difference to regulation. The shots just hit higher as things get lighter and faster.
As to weight of the rifle, it tips the scale right on 3 kg.