I shot out two 280’s.
I tried heavier bullets but settled on 140’s.
I tried every powder available and got the best results with IMR4831!
H4350 worked well as did R17.
Today I would try R16 which wasn’t available when I was shooting the 280.


“Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away”.
Antoine de Saint-Exupery. Posted by Brad.