Shooting from a Ransom Rest.
Same gun: G17
Same Powder and Charge: Autocomp 4.3gn
Different bullets, both wearing Hi-Tek
Lee 356-125-2R
MP 356/359-125 (357) Flat Round Nose, Flat
Base
The Autocomp had been one of the most accurate powders for the Lee bullet. Now I get to go back and re-test everything to find out if that is still true.