I finally got my Arisaka rechambered in 300 Sav. to accept cast boolits.
I was presently surprised at the range. That's a 2 inch group with a 1 " cluster.
The load: Lee 185 grain Brit. 303 boolit, sized .313. Alum. Gas checks. Lube: alox/paste wax tumble.
Pushed by 15.5 grains 2400.