Yes, I was surprised that the velocity was so high. Subsequent groups of the same load have been less accurate. As soon as I shoot up what I have loaded already, I will reduce the charge, maybe try H4895.
The alloy is WW metal (4lbs.) with a little stick-on lead (4 oz.). I sized the bullets with a Lee .224 sizing die, and used Lee Liquid Alox to tumble lube them before and after sizing. The gas checks came from Hornady, and the Lee die installs them quite handily. Ready to load, they weigh about 52.5 grains.
Casting, lubing, sizing, and loading bullets this small isn't easy. I can't even see the bullets without my reading glasses on !