What powder have you found to be the most accurate with 175 grain bullets in the 280 Remington?

I'm asking specifically about the Hornady RN, but if you have a good load for some other brand, please let me know.

Thanks!

RL 22 is good but I've found IMR 7828 to be very accurate with top velocity.

The .280's that I have owned over the years varied somewhat in maximum load pressure. My Remington Mountain rifle was 2 grains less on maximum loads than my Winchester Model 70. My Model 70 will shoot 51 Grains of IMR4350, 175 Grain Noslers very accurately with no excessive pressure signs. My Remington would show excessive pressure signs at 49 Grains of IMR4350. IMR4350 is the powder for me giving groups under 3/4" all day long.

Have found both Re22 and 7828 to be top powders in the .280 Rem., or 7X64mm with 175 grain Nosler bullets. Have used both Speer and Barnes data with this bullet with no pressure problems. At 2800+ MV in a .280, the 175 Nosler is a real killer!!