Originally Posted by
mountaineer magic
With the 460 gr I was planning on only about 75 gr of powder , especially with the rifle being so light.
maybe I will try some Blackhorn with it afterall.
I shoot BH with 460g Bullshops fairly regularly. I won't tell anyone else to do it because of what Western says. But I never shoot more than 80 grains. I've never had an issue with needing a tight seal with BH. I shoot the .504s out of a .503 without any issues whatsoever.