Kentuckywindage
Well-Known Member
Do you care to tell what powder you use in this load?Are you asking a question on which bullets at 500 yards?
If so, I would say any that shoot well in your rifle and retain the manufacturers minimum velocity to function at desired max range (usually 1800 FPS). Since using the 175 MK, maybe the 180 GK will be an easy transition to load for. Sierras are usually pretty easy to get shooting and I believe they actually advertise opening velocities a little below 1800. The faster you can push the heaviest bullet will give you more range.
I have a load for a 215 Berger and it holds above 1800 FPS beyond 600 yards with the 20" barrel.