various .303s and in Nagants, specifically, the BT "Match" SIerras and the 174 BT FMJ Hornaday, the both have proven disappointing in accuracy (with no exceptions that I can recall). I suspect it could be the powder, etc, but for some reason, despite a good bit of trial and error, I have virtually given up on both bullets and heavier bullets in general. 150 grain seems to work best at least at reasonable ranges (not exceeding 220 yards).