Quick update:
Achieved a solid 2837’sec 5 shot average with IMR4350 and 100 grain Speer pointed soft point, no excessive pressure signs.
Standard primer and 47.0 grains of IMR4350.

I wish I could bring myself to fire a couple of my original Kynoch that are loaded with 41.5 grains of whatever they used, I would be surprised if those original loads made advertised velocities

DISCLAIMER:
If you happen to have a spare .242 Vickers chambered rifle sitting around

please consider this load safe ONLY in my rifle.

- Mike

EDIT ADDED:
The sights are a standing marked 200 yards and one folding leaf marked 300 yards.
Using nominal velocity and ballistic coefficient assumptions and my altitude of 7500’ I will be looking for 1.3” high at 50 yards and ~2.2” high at 100 yards.
This is to be checked my next outing.