Gunor.
There was a Bullet Casting outfit up in the Seattle area back in the 1990's, I forgot their name, and they no longer are around.
I bought a LOT of bullets from them and still have a bunch of that bullet.
Shot them in every .30 cal from Carbine to 30-06.
They are not the same as the Lyman 311410 as to shape and weight, more like the Saeco bullet for a Carbine.
JW