Rainier makes the Funnel Points for them and they do have a dot similar to Speer products. They are still listed on the Rainier website but its now a Harvester exclusive. I confirmed it by calling Rainier looking for a supplier for the 40-200gr after Cabelas sold out. Harvester wants about $19/50. When they were sold at Cabelas they were about $70/500.

Your load is probably a fair amount faster than a 10mm at 50 yards and in a 10mm its "ok" with good shot placement. I never could get them to shoot as well as 200 XTPs and the new Nosler 200gr looks very promising too. If you want to shoot a lot of 45x40 200gr bullets, i would look for cheaper options.