Ben,
Nice. Was out with my .500's yesterday, not a proper range like yours....just rough shooting in the National Forest near the house whacking rocks.
Would be curious to know what that load chronographs at?
What bullet is that? Grease groove or PP?

I've never tried the Old Eynesford, have a fair amout of Swiss 1 1/2 on hand. Nothing quite like that cloud of smoke!
- Mike