If the bore is crisp, boattailed bullets will work well. If there is cordite erosion, flat based bullets will work better. With a sharp bore, take your pick.
This is the first time anyone said that before. I'd have prob bought a bunch more of the Hornady 174gr if I'd known this. My rifle is a minty Mk2 so no bore erosion.
I'm still pretty amazed at the accuracy this thing seems to be showing. Its still early days yet but I was a bit concerned about ending up w a 3+ MOA rifle.