I have two loads with them so far. Nosler brass, Fed 215 primer, 78.5 gr. N570 @ 3,050 fps and I also use 83.5 gr Reloader 33 for 3,150 fps. My rifle has a 28" 1:8.5 twist. The chamber has a long throat. AOL is 3.745. I have not found any N570 in the last two years or Reloader 33. I have noticed a carbon ring with the Reloader 33. I have been keeping the barrel clean using a brush to make sure and remove the ring. I noticed a pressure jump a couple of times before I started brushing the chamber.Any body loading 195 Bergers in the 28 Nosler? DG