I have had good luck with the 180 speer round nose. I use army surplus brass, federal 210 primer 180 speer, and either 39 to 41 gr of 3031 powder or RL15. I forget the charge of this. By some strange coincidence both gave me 2405 fps. And my chronograph was working. I think RL 15 gave slightly lower pressures. Both gave good accuracy .. Hope it works for you.