Thread: My Shrunken Wood... need advice on No 4 Enfield.

from my understanding the .303s have ALWAYS preferred one weight of projectile over another...... just as all cartridge/twist rates have a sweet spot.
some 303s prefer the 180s as its closer to what they were BUILT/DESIGNED to use where as others handle the 150s or indeed even 123grn (7.62x39mm projectiles) as twist rate is different.
grab a box of factory 180s first up and see what happens....the $40 it cost could be a lot less than the tinkering and may well end up fixing what isnt broken to begin with.